1222220212122 has 64 divisors (see below), whose sum is σ = 3089854059264. Its totient is φ = 313631792640.

The previous prime is 1222220212099. The next prime is 1222220212151. The reversal of 1222220212122 is 2212120222221.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30229779 + ... + 30270182.

It is an arithmetic number, because the mean of its divisors is an integer number (48278969676).

Almost surely, 2^{1222220212122} is an apocalyptic number.

1222220212122 is an abundant number, since it is smaller than the sum of its proper divisors (1867633847142).

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

1222220212122 is a wasteful number, since it uses less digits than its factorization.

1222220212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60500023.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1222220212122 its reverse (2212120222221), we get a palindrome (3434340434343).

The spelling of 1222220212122 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, one hundred twenty-two".