102402120222 has 12 divisors (see below), whose sum is σ = 221871260520. Its totient is φ = 34134040068.

The previous prime is 102402120221. The next prime is 102402120241. The reversal of 102402120222 is 222021204201.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 5689006679 = 102402120222 / (1 + 0 + 2 + 4 + 0 + 2 + 1 + 2 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 102402120195 and 102402120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102402120221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2844503322 + ... + 2844503357.

It is an arithmetic number, because the mean of its divisors is an integer number (18489271710).

Almost surely, 2^102402120222 is an apocalyptic number.

102402120222 is an abundant number, since it is smaller than the sum of its proper divisors (119469140298).

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

102402120222 is a wasteful number, since it uses less digits than its factorization.

102402120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5689006687 (or 5689006684 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102402120222 its reverse (222021204201), we get a palindrome (324423324423).

The spelling of 102402120222 in words is "one hundred two billion, four hundred two million, one hundred twenty thousand, two hundred twenty-two".