102515042220 has 24 divisors (see below), whose sum is σ = 287042118384. Its totient is φ = 27337344576.

The previous prime is 102515042197. The next prime is 102515042221. The reversal of 102515042220 is 22240515201.

It is not an unprimeable number, because it can be changed into a prime (102515042221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854291959 + ... + 854292078.

It is an arithmetic number, because the mean of its divisors is an integer number (11960088266).

Almost surely, 2^102515042220 is an apocalyptic number.

102515042220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102515042220 is an abundant number, since it is smaller than the sum of its proper divisors (184527076164).

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

102515042220 is a wasteful number, since it uses less digits than its factorization.

102515042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708584049 (or 1708584047 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

Adding to 102515042220 its reverse (22240515201), we get a palindrome (124755557421).

The spelling of 102515042220 in words is "one hundred two billion, five hundred fifteen million, forty-two thousand, two hundred twenty".