102122221020 has 48 divisors (see below), whose sum is σ = 285990475680. Its totient is φ = 27227996416.

The previous prime is 102122220913. The next prime is 102122221049. The reversal of 102122221020 is 20122221201.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222586 + ... + 503774.

It is an arithmetic number, because the mean of its divisors is an integer number (5958134910).

Almost surely, 2^102122221020 is an apocalyptic number.

102122221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102122221020 is an abundant number, since it is smaller than the sum of its proper divisors (183868254660).

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

102122221020 is a wasteful number, since it uses less digits than its factorization.

102122221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287254 (or 287252 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102122221020 its reverse (20122221201), we get a palindrome (122244442221).

The spelling of 102122221020 in words is "one hundred two billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty".