1220212022202 has 24 divisors (see below), whose sum is σ = 2643813031860. Its totient is φ = 406734215040.

The previous prime is 1220212022189. The next prime is 1220212022231. The reversal of 1220212022202 is 2022202120221.

1220212022202 is a `hidden beast` number, since 1 + 220 + 21 + 202 + 220 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1217206899441 + 3005122761 = 1103271^2 + 54819^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4417824 + ... + 4685892.

Almost surely, 2^{1220212022202} is an apocalyptic number.

1220212022202 is an abundant number, since it is smaller than the sum of its proper divisors (1423601009658).

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

1220212022202 is a wasteful number, since it uses less digits than its factorization.

1220212022202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520958 (or 520955 counting only the distinct ones).

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

Adding to 1220212022202 its reverse (2022202120221), we get a palindrome (3242414142423).

The spelling of 1220212022202 in words is "one trillion, two hundred twenty billion, two hundred twelve million, twenty-two thousand, two hundred two".