102210021220 has 24 divisors (see below), whose sum is σ = 215238945600. Its totient is φ = 40770122592.

The previous prime is 102210021217. The next prime is 102210021233. The reversal of 102210021220 is 22120012201.

It is a happy number.

It is a super-3 number, since 3×102210021220³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102210021220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7110510 + ... + 7124869.

It is an arithmetic number, because the mean of its divisors is an integer number (8968289400).

Almost surely, 2^102210021220 is an apocalyptic number.

102210021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102210021220 is an abundant number, since it is smaller than the sum of its proper divisors (113028924380).

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

102210021220 is a wasteful number, since it uses less digits than its factorization.

102210021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14235747 (or 14235745 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 102210021220 its reverse (22120012201), we get a palindrome (124330033421).

The spelling of 102210021220 in words is "one hundred two billion, two hundred ten million, twenty-one thousand, two hundred twenty".