102021210222012 has 84 divisors (see below), whose sum is σ = 267843813971496. Its totient is φ = 33986668292640.

The previous prime is 102021210221939. The next prime is 102021210222013. The reversal of 102021210222012 is 210222012120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021210222013) 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 27 ways as a sum of consecutive naturals, for example, 5632939 + ... + 15354882.

It is an arithmetic number, because the mean of its divisors is an integer number (3188616832994).

Almost surely, 2^{102021210222012} is an apocalyptic number.

102021210222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102021210222012 is an abundant number, since it is smaller than the sum of its proper divisors (165822603749484).

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

102021210222012 is a wasteful number, since it uses less digits than its factorization.

102021210222012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20989510 (or 20989493 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102021210222012 its reverse (210222012120201), we get a palindrome (312243222342213).

The spelling of 102021210222012 in words is "one hundred two trillion, twenty-one billion, two hundred ten million, two hundred twenty-two thousand, twelve".