2021011222122 has 32 divisors (see below), whose sum is σ = 4755320524800. Its totient is φ = 634042736064.

The previous prime is 2021011222079. The next prime is 2021011222141. The reversal of 2021011222122 is 2212221101202.

It is a happy number.

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 = 2021011222095 and 2021011222104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1100767722 + ... + 1100769557.

It is an arithmetic number, because the mean of its divisors is an integer number (148603766400).

Almost surely, 2^{2021011222122} is an apocalyptic number.

2021011222122 is an abundant number, since it is smaller than the sum of its proper divisors (2734309302678).

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

2021011222122 is a wasteful number, since it uses less digits than its factorization.

2021011222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201537307 (or 2201537301 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2021011222122 its reverse (2212221101202), we get a palindrome (4233232323324).

The spelling of 2021011222122 in words is "two trillion, twenty-one billion, eleven million, two hundred twenty-two thousand, one hundred twenty-two".