102202122021210 has 96 divisors (see below), whose sum is σ = 268559784052560. Its totient is φ = 26963403669504.

The previous prime is 102202122021161. The next prime is 102202122021277. The reversal of 102202122021210 is 12120221202201.

It is a happy number.

102202122021210 is a `hidden beast` number, since 1 + 0 + 220 + 2 + 1 + 220 + 212 + 10 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 7692751563561 + 94509370457649 = 2773581^2 + 9721593^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22665906 + ... + 26798274.

Almost surely, 2^{102202122021210} is an apocalyptic number.

102202122021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102202122021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134279892026280).

102202122021210 is an abundant number, since it is smaller than the sum of its proper divisors (166357662031350).

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

102202122021210 is a wasteful number, since it uses less digits than its factorization.

102202122021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4135312 (or 4135309 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102202122021210 its reverse (12120221202201), we get a palindrome (114322343223411).

The spelling of 102202122021210 in words is "one hundred two trillion, two hundred two billion, one hundred twenty-two million, twenty-one thousand, two hundred ten".