201220021122 has 16 divisors (see below), whose sum is σ = 416317285440. Its totient is φ = 64760466512.

The previous prime is 201220021117. The next prime is 201220021129. The reversal of 201220021122 is 221120022102.

201220021122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201220021122² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201220021129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578218278 + ... + 578218625.

It is an arithmetic number, because the mean of its divisors is an integer number (26019830340).

Almost surely, 2^201220021122 is an apocalyptic number.

201220021122 is an abundant number, since it is smaller than the sum of its proper divisors (215097264318).

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

201220021122 is a wasteful number, since it uses less digits than its factorization.

201220021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156436937.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201220021122 its reverse (221120022102), we get a palindrome (422340043224).

The spelling of 201220021122 in words is "two hundred one billion, two hundred twenty million, twenty-one thousand, one hundred twenty-two".