1222212020202 has 24 divisors (see below), whose sum is σ = 2648149551684. Its totient is φ = 407400390144.

The previous prime is 1222212020167. The next prime is 1222212020207. The reversal of 1222212020202 is 2020202122221.

It can be written as a sum of positive squares in 2 ways, for example, as 840758791041 + 381453229161 = 916929^2 + 617619^2 .

It is a super-2 number, since 2×1222212020202² (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).

It is not an unprimeable number, because it can be changed into a prime (1222212020207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2472748 + ... + 2925560.

Almost surely, 2^{1222212020202} is an apocalyptic number.

1222212020202 is an abundant number, since it is smaller than the sum of its proper divisors (1425937531482).

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

1222212020202 is a wasteful number, since it uses less digits than its factorization.

1222212020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602774 (or 602771 counting only the distinct ones).

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

Adding to 1222212020202 its reverse (2020202122221), we get a palindrome (3242414142423).

The spelling of 1222212020202 in words is "one trillion, two hundred twenty-two billion, two hundred twelve million, twenty thousand, two hundred two".