1212211012122 has 96 divisors (see below), whose sum is σ = 3040476341760. Its totient is φ = 345410086560.

The previous prime is 1212211012097. The next prime is 1212211012151. The reversal of 1212211012122 is 2212101122121.

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 = 1212211012095 and 1212211012104.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1987128 + ... + 2524499.

It is an arithmetic number, because the mean of its divisors is an integer number (31671628560).

Almost surely, 2^{1212211012122} is an apocalyptic number.

1212211012122 is an abundant number, since it is smaller than the sum of its proper divisors (1828265329638).

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

1212211012122 is a wasteful number, since it uses less digits than its factorization.

1212211012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511728 (or 4511725 counting only the distinct ones).

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

Adding to 1212211012122 its reverse (2212101122121), we get a palindrome (3424312134243).

The spelling of 1212211012122 in words is "one trillion, two hundred twelve billion, two hundred eleven million, twelve thousand, one hundred twenty-two".