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1222120301 = 10112100201
BaseRepresentation
bin100100011011000…
…0001001101101101
310011011122010212212
41020312001031231
510000330322201
6321134140205
742166564643
oct11066011555
93134563785
101222120301
11577945086
122a1351665
1316626aa0c
14b844b193
1572459abb
hex48d8136d

1222120301 has 4 divisors (see below), whose sum is σ = 1234220604. Its totient is φ = 1210020000.

The previous prime is 1222120297. The next prime is 1222120307. The reversal of 1222120301 is 1030212221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 864948100 + 357172201 = 29410^2 + 18899^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222120301 - 22 = 1222120297 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222120307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6050000 + ... + 6050201.

It is an arithmetic number, because the mean of its divisors is an integer number (308555151).

Almost surely, 21222120301 is an apocalyptic number.

It is an amenable number.

1222120301 is a deficient number, since it is larger than the sum of its proper divisors (12100303).

1222120301 is a wasteful number, since it uses less digits than its factorization.

1222120301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100302.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1222120301 is about 34958.8372375284. The cubic root of 1222120301 is about 1069.1483895525.

Adding to 1222120301 its reverse (1030212221), we get a palindrome (2252332522).

The spelling of 1222120301 in words is "one billion, two hundred twenty-two million, one hundred twenty thousand, three hundred one".

Divisors: 1 101 12100201 1222120301