102021212112210 has 48 divisors (see below), whose sum is σ = 279215948943360. Its totient is φ = 25773779901600.

The previous prime is 102021212112133. The next prime is 102021212112217. The reversal of 102021212112210 is 12211212120201.

102021212112210 is a `hidden beast` number, since 1 + 0 + 20 + 212 + 1 + 211 + 221 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (102021212112217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29830762066 + ... + 29830765485.

It is an arithmetic number, because the mean of its divisors is an integer number (5816998936320).

Almost surely, 2^{102021212112210} is an apocalyptic number.

102021212112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021212112210 is an abundant number, since it is smaller than the sum of its proper divisors (177194736831150).

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

102021212112210 is a wasteful number, since it uses less digits than its factorization.

102021212112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59661527583 (or 59661527580 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102021212112210 its reverse (12211212120201), we get a palindrome (114232424232411).

The spelling of 102021212112210 in words is "one hundred two trillion, twenty-one billion, two hundred twelve million, one hundred twelve thousand, two hundred ten".