31000012022201 has 16 divisors (see below), whose sum is σ = 33441877718928. Its totient is φ = 28631963136000.

The previous prime is 31000012022137. The next prime is 31000012022233. The reversal of 31000012022201 is 10222021000013.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 264297781801 + 30735714240400 = 514099^2 + 5543980^2 .

It is a cyclic number.

It is not a de Polignac number, because 31000012022201 - 2⁶ = 31000012022137 is a prime.

It is a super-2 number, since 2×31000012022201² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31000012022281) 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, 79694270 + ... + 80082311.

It is an arithmetic number, because the mean of its divisors is an integer number (2090117357433).

Almost surely, 2^{31000012022201} is an apocalyptic number.

It is an amenable number.

31000012022201 is a deficient number, since it is larger than the sum of its proper divisors (2441865696727).

31000012022201 is a wasteful number, since it uses less digits than its factorization.

31000012022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159776812.

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

Adding to 31000012022201 its reverse (10222021000013), we get a palindrome (41222033022214).

The spelling of 31000012022201 in words is "thirty-one trillion, twelve million, twenty-two thousand, two hundred one".