2021220022021 has 16 divisors (see below), whose sum is σ = 2252821032000. Its totient is φ = 1802147920128.

The previous prime is 2021220022007. The next prime is 2021220022037. The reversal of 2021220022021 is 1202200221202.

It is a de Polignac number, because none of the positive numbers 2^k-2021220022021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021220021986 and 2021220022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021220022721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13742530 + ... + 13888828.

It is an arithmetic number, because the mean of its divisors is an integer number (140801314500).

Almost surely, 2^{2021220022021} is an apocalyptic number.

It is an amenable number.

2021220022021 is a deficient number, since it is larger than the sum of its proper divisors (231601009979).

2021220022021 is a wasteful number, since it uses less digits than its factorization.

2021220022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189108.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2021220022021 its reverse (1202200221202), we get a palindrome (3223420243223).

The spelling of 2021220022021 in words is "two trillion, twenty-one billion, two hundred twenty million, twenty-two thousand, twenty-one".