102210220111212 has 18 divisors (see below), whose sum is σ = 258364723058988. Its totient is φ = 34070073370392.

The previous prime is 102210220111211. The next prime is 102210220111229. The reversal of 102210220111212 is 212111022012201.

102210220111212 is a `hidden beast` number, since 1 + 0 + 221 + 0 + 220 + 1 + 11 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 (102210220111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1419586390398 + ... + 1419586390469.

Almost surely, 2^{102210220111212} is an apocalyptic number.

102210220111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102210220111212 is an abundant number, since it is smaller than the sum of its proper divisors (156154502947776).

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

102210220111212 is a wasteful number, since it uses less digits than its factorization.

102210220111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2839172780877 (or 2839172780872 counting only the distinct ones).

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

Adding to 102210220111212 its reverse (212111022012201), we get a palindrome (314321242123413).

The spelling of 102210220111212 in words is "one hundred two trillion, two hundred ten billion, two hundred twenty million, one hundred eleven thousand, two hundred twelve".