20212121011122 has 60 divisors (see below), whose sum is σ = 45734105855790. Its totient is φ = 6671961708192.

The previous prime is 20212121011097. The next prime is 20212121011123. The reversal of 20212121011122 is 22111012121202.

20212121011122 is a `hidden beast` number, since 202 + 121 + 210 + 11 + 122 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11593146526641 + 8618974484481 = 3404871^2 + 2935809^2 .

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 = 20212121011095 and 20212121011104.

It is not an unprimeable number, because it can be changed into a prime (20212121011123) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 4161547 + ... + 7598862.

Almost surely, 2^{20212121011122} is an apocalyptic number.

20212121011122 is an abundant number, since it is smaller than the sum of its proper divisors (25521984844668).

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

20212121011122 is a wasteful number, since it uses less digits than its factorization.

20212121011122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11760629 (or 11760517 counting only the distinct ones).

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

Adding to 20212121011122 its reverse (22111012121202), we get a palindrome (42323133132324).

The spelling of 20212121011122 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-one million, eleven thousand, one hundred twenty-two".