2021210221122 has 24 divisors (see below), whose sum is σ = 4453514048880. Its totient is φ = 662317473240.

The previous prime is 2021210221091. The next prime is 2021210221159. The reversal of 2021210221122 is 2211220121202.

It is a happy number.

2021210221122 is a `hidden beast` number, since 202 + 121 + 0 + 221 + 122 = 666.

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 = 2021210221095 and 2021210221104.

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, 951604504 + ... + 951606627.

It is an arithmetic number, because the mean of its divisors is an integer number (185563085370).

Almost surely, 2^{2021210221122} is an apocalyptic number.

2021210221122 is an abundant number, since it is smaller than the sum of its proper divisors (2432303827758).

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

2021210221122 is a wasteful number, since it uses less digits than its factorization.

2021210221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903211198 (or 1903211195 counting only the distinct ones).

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

Adding to 2021210221122 its reverse (2211220121202), we get a palindrome (4232430342324).

The spelling of 2021210221122 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred twenty-one thousand, one hundred twenty-two".