1212210112122 has 12 divisors (see below), whose sum is σ = 2626455242970. Its totient is φ = 404070037368.

The previous prime is 1212210112103. The next prime is 1212210112153. The reversal of 1212210112122 is 2212110122121.

It can be written as a sum of positive squares in only one way, i.e., 695290813281 + 516919298841 = 833841^2 + 718971^2 .

It is a super-2 number, since 2×1212210112122² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 67345006229 = 1212210112122 / (1 + 2 + 1 + 2 + 2 + 1 + 0 + 1 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1212210112095 and 1212210112104.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33672503097 + ... + 33672503132.

Almost surely, 2^{1212210112122} is an apocalyptic number.

1212210112122 is an abundant number, since it is smaller than the sum of its proper divisors (1414245130848).

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

1212210112122 is a wasteful number, since it uses less digits than its factorization.

1212210112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67345006237 (or 67345006234 counting only the distinct ones).

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

Adding to 1212210112122 its reverse (2212110122121), we get a palindrome (3424320234243).

Subtracting 1212210112122 from its reverse (2212110122121), we obtain a palindrome (999900009999).

The spelling of 1212210112122 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred twelve thousand, one hundred twenty-two".