1200210210221 has 4 divisors (see below), whose sum is σ = 1309320229344. Its totient is φ = 1091100191100.

The previous prime is 1200210210211. The next prime is 1200210210259. The reversal of 1200210210221 is 1220120120021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200210210221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200210210196 and 1200210210205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200210210211) 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, 54555009545 + ... + 54555009566.

It is an arithmetic number, because the mean of its divisors is an integer number (327330057336).

Almost surely, 2^{1200210210221} is an apocalyptic number.

1200210210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200210210221 is a deficient number, since it is larger than the sum of its proper divisors (109110019123).

1200210210221 is a wasteful number, since it uses less digits than its factorization.

1200210210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109110019122.

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

Adding to 1200210210221 its reverse (1220120120021), we get a palindrome (2420330330242).

The spelling of 1200210210221 in words is "one trillion, two hundred billion, two hundred ten million, two hundred ten thousand, two hundred twenty-one".