102212100031 has 4 divisors (see below), whose sum is σ = 102217147272. Its totient is φ = 102207052792.

The previous prime is 102212099987. The next prime is 102212100037. The reversal of 102212100031 is 130001212201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102212100031 - 2²¹ = 102210002879 is a prime.

It is a super-2 number, since 2×102212100031² (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 = 102212099984 and 102212100020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102212100037) 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, 2493121 + ... + 2533786.

It is an arithmetic number, because the mean of its divisors is an integer number (25554286818).

Almost surely, 2^102212100031 is an apocalyptic number.

102212100031 is a deficient number, since it is larger than the sum of its proper divisors (5047241).

102212100031 is an equidigital number, since it uses as much as digits as its factorization.

102212100031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5047240.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102212100031 its reverse (130001212201), we get a palindrome (232213312232).

The spelling of 102212100031 in words is "one hundred two billion, two hundred twelve million, one hundred thousand, thirty-one".