202111120031 has 16 divisors (see below), whose sum is σ = 205233600000. Its totient is φ = 199014130656.

The previous prime is 202111119983. The next prime is 202111120063. The reversal of 202111120031 is 130021111202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202111120031 is a prime.

It is a super-2 number, since 2×202111120031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202111119988 and 202111120015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111120091) 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, 19928960 + ... + 19939098.

It is an arithmetic number, because the mean of its divisors is an integer number (12827100000).

Almost surely, 2^202111120031 is an apocalyptic number.

202111120031 is a deficient number, since it is larger than the sum of its proper divisors (3122479969).

202111120031 is a wasteful number, since it uses less digits than its factorization.

202111120031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11366.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 202111120031 its reverse (130021111202), we get a palindrome (332132231233).

The spelling of 202111120031 in words is "two hundred two billion, one hundred eleven million, one hundred twenty thousand, thirty-one".