102120221210 has 32 divisors (see below), whose sum is σ = 211730042880. Its totient is φ = 34736954112.

The previous prime is 102120221209. The next prime is 102120221243. The reversal of 102120221210 is 12122021201.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 5734655 + ... + 5752434.

It is an arithmetic number, because the mean of its divisors is an integer number (6616563840).

Almost surely, 2^102120221210 is an apocalyptic number.

102120221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102120221210 is an abundant number, since it is smaller than the sum of its proper divisors (109609821670).

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

102120221210 is a wasteful number, since it uses less digits than its factorization.

102120221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11487230.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 102120221210 its reverse (12122021201), we get a palindrome (114242242411).

Subtracting from 102120221210 its reverse (12122021201), we obtain a square (89998200009 = 299997²).

The spelling of 102120221210 in words is "one hundred two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred ten".