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1200210201221 = 19232746476433
BaseRepresentation
bin10001011101110010000…
…110100100101010000101
311020201221201020102211212
4101131302012210222011
5124131012302414341
62315211405541205
7152466220245413
oct21356206445205
94221851212755
101200210201221
11423008407409
12174737b74805
1389244004325
144213a4042b3
15213483ac5eb
hex117721a4a85

1200210201221 has 8 divisors (see below), whose sum is σ = 1318308688320. Its totient is φ = 1087604667072.

The previous prime is 1200210201121. The next prime is 1200210201251. The reversal of 1200210201221 is 1221020120021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200210201221 - 214 = 1200210184837 is a prime.

It is a super-2 number, since 2×12002102012212 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200210201196 and 1200210201205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200210201251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1373237780 + ... + 1373238653.

It is an arithmetic number, because the mean of its divisors is an integer number (164788586040).

Almost surely, 21200210201221 is an apocalyptic number.

It is an amenable number.

1200210201221 is a deficient number, since it is larger than the sum of its proper divisors (118098487099).

1200210201221 is a wasteful number, since it uses less digits than its factorization.

1200210201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746476475.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1200210201221 its reverse (1221020120021), we get a palindrome (2421230321242).

The spelling of 1200210201221 in words is "one trillion, two hundred billion, two hundred ten million, two hundred one thousand, two hundred twenty-one".

Divisors: 1 19 23 437 2746476433 52183052227 63168957959 1200210201221