31202222000021 has 16 divisors (see below), whose sum is σ = 32737851310080. Its totient is φ = 29681780428080.

The previous prime is 31202221999999. The next prime is 31202222000071. The reversal of 31202222000021 is 12000022220213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31202222000021 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 (31202222000071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2013470 + ... + 8152208.

It is an arithmetic number, because the mean of its divisors is an integer number (2046115706880).

Almost surely, 2^{31202222000021} is an apocalyptic number.

It is an amenable number.

31202222000021 is a deficient number, since it is larger than the sum of its proper divisors (1535629310059).

31202222000021 is a wasteful number, since it uses less digits than its factorization.

31202222000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6139976.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 31202222000021 its reverse (12000022220213), we get a palindrome (43202244220234).

The spelling of 31202222000021 in words is "thirty-one trillion, two hundred two billion, two hundred twenty-two million, twenty-one", and thus it is an aban number.