102235520212 has 18 divisors (see below), whose sum is σ = 208122309402. Its totient is φ = 43815222864.

The previous prime is 102235520209. The next prime is 102235520213. The reversal of 102235520212 is 212025532201.

It can be written as a sum of positive squares in only one way, i.e., 89165543236 + 13069976976 = 298606^2 + 114324^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102235520213) 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, 260804703 + ... + 260805094.

Almost surely, 2^102235520212 is an apocalyptic number.

It is an amenable number.

102235520212 is an abundant number, since it is smaller than the sum of its proper divisors (105886789190).

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

102235520212 is a wasteful number, since it uses less digits than its factorization.

102235520212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521609815 (or 521609806 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 102235520212 in words is "one hundred two billion, two hundred thirty-five million, five hundred twenty thousand, two hundred twelve".