102120111112020 has 48 divisors (see below), whose sum is σ = 286029724339968. Its totient is φ = 27223133132160.

The previous prime is 102120111112013. The next prime is 102120111112021. The reversal of 102120111112020 is 20211111021201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120111112021) 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, 277830364 + ... + 278197683.

It is an arithmetic number, because the mean of its divisors is an integer number (5958952590416).

Almost surely, 2^{102120111112020} is an apocalyptic number.

102120111112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102120111112020 is an abundant number, since it is smaller than the sum of its proper divisors (183909613227948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102120111112020 is a wasteful number, since it uses less digits than its factorization.

102120111112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556031120 (or 556031118 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102120111112020 its reverse (20211111021201), we get a palindrome (122331222133221).

The spelling of 102120111112020 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, one hundred twelve thousand, twenty".