102113121220 has 48 divisors (see below), whose sum is σ = 236002128768. Its totient is φ = 36803432960.

The previous prime is 102113121217. The next prime is 102113121239. The reversal of 102113121220 is 22121311201.

102113121220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 102113121194 and 102113121203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028904 + ... + 2078623.

It is an arithmetic number, because the mean of its divisors is an integer number (4916711016).

Almost surely, 2^102113121220 is an apocalyptic number.

102113121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102113121220 is an abundant number, since it is smaller than the sum of its proper divisors (133889007548).

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

102113121220 is a wasteful number, since it uses less digits than its factorization.

102113121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4107660 (or 4107658 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 102113121220 its reverse (22121311201), we get a palindrome (124234432421).

The spelling of 102113121220 in words is "one hundred two billion, one hundred thirteen million, one hundred twenty-one thousand, two hundred twenty".