102222022212 has 36 divisors (see below), whose sum is σ = 258404265756. Its totient is φ = 34072727040.

The previous prime is 102222022171. The next prime is 102222022213. The reversal of 102222022212 is 212220222201.

It can be written as a sum of positive squares in 2 ways, for example, as 95466168576 + 6755853636 = 308976^2 + 82194^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×102222022212² (a number of 23 digits) contains 22 as substring.

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 (102222022213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1800012 + ... + 1855932.

It is an arithmetic number, because the mean of its divisors is an integer number (7177896271).

Almost surely, 2^102222022212 is an apocalyptic number.

102222022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102222022212 is an abundant number, since it is smaller than the sum of its proper divisors (156182243544).

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

102222022212 is a wasteful number, since it uses less digits than its factorization.

102222022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106708 (or 106703 counting only the distinct ones).

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

Adding to 102222022212 its reverse (212220222201), we get a palindrome (314442244413).

The spelling of 102222022212 in words is "one hundred two billion, two hundred twenty-two million, twenty-two thousand, two hundred twelve".