102120212110031 has 4 divisors (see below), whose sum is σ = 102578150281152. Its totient is φ = 101662273938912.

The previous prime is 102120212110019. The next prime is 102120212110087. The reversal of 102120212110031 is 130011212021201.

It is a happy number.

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 102120212110031 - 2¹⁰ = 102120212109007 is a prime.

It is a super-2 number, since 2×102120212110031² (a number of 29 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 = 102120212109991 and 102120212110009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120512110031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228969085226 + ... + 228969085671.

It is an arithmetic number, because the mean of its divisors is an integer number (25644537570288).

Almost surely, 2^{102120212110031} is an apocalyptic number.

102120212110031 is a deficient number, since it is larger than the sum of its proper divisors (457938171121).

102120212110031 is an equidigital number, since it uses as much as digits as its factorization.

102120212110031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457938171120.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102120212110031 its reverse (130011212021201), we get a palindrome (232131424131232).

The spelling of 102120212110031 in words is "one hundred two trillion, one hundred twenty billion, two hundred twelve million, one hundred ten thousand, thirty-one".