102122212122 has 36 divisors (see below), whose sum is σ = 257389659306. Its totient is φ = 29177774640.

The previous prime is 102122212103. The next prime is 102122212219. The reversal of 102122212122 is 221212221201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75091892841 + 27030319281 = 274029^2 + 164409^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 102122212095 and 102122212104.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57891529 + ... + 57893292.

Almost surely, 2^102122212122 is an apocalyptic number.

102122212122 is an abundant number, since it is smaller than the sum of its proper divisors (155267447184).

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

102122212122 is a wasteful number, since it uses less digits than its factorization.

102122212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115784843 (or 115784833 counting only the distinct ones).

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

Adding to 102122212122 its reverse (221212221201), we get a palindrome (323334433323).

The spelling of 102122212122 in words is "one hundred two billion, one hundred twenty-two million, two hundred twelve thousand, one hundred twenty-two".