2021122211212 has 24 divisors (see below), whose sum is σ = 4033099074816. Its totient is φ = 877953539328.

The previous prime is 2021122211201. The next prime is 2021122211239. The reversal of 2021122211212 is 2121122211202.

It is a super-3 number, since 3×2021122211212³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021122211212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1143167788 + ... + 1143169555.

It is an arithmetic number, because the mean of its divisors is an integer number (168045794784).

Almost surely, 2^{2021122211212} is an apocalyptic number.

It is an amenable number.

2021122211212 is a deficient number, since it is larger than the sum of its proper divisors (2011976863604).

2021122211212 is a wasteful number, since it uses less digits than its factorization.

2021122211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286337377 (or 2286337375 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2021122211212 its reverse (2121122211202), we get a palindrome (4142244422414).

The spelling of 2021122211212 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twelve".