201222102100031 has 2 divisors, whose sum is σ = 201222102100032. Its totient is φ = 201222102100030.

The previous prime is 201222102099961. The next prime is 201222102100073. The reversal of 201222102100031 is 130001201222102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201222102100031 - 2²⁶ = 201222034991167 is a prime.

It is a super-2 number, since 2×201222102100031² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 201222102099982 and 201222102100009.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201222102100091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100611051050015 + 100611051050016.

It is an arithmetic number, because the mean of its divisors is an integer number (100611051050016).

Almost surely, 2^{201222102100031} is an apocalyptic number.

201222102100031 is a deficient number, since it is larger than the sum of its proper divisors (1).

201222102100031 is an equidigital number, since it uses as much as digits as its factorization.

201222102100031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201222102100031 its reverse (130001201222102), we get a palindrome (331223303322133).

The spelling of 201222102100031 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred two million, one hundred thousand, thirty-one".