2120222022021 has 12 divisors (see below), whose sum is σ = 3062594116972. Its totient is φ = 1413457718976.

The previous prime is 2120222022019. The next prime is 2120222022029. The reversal of 2120222022021 is 1202202220212.

2120222022021 is a `hidden beast` number, since 2 + 1 + 202 + 220 + 220 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 974228220900 + 1145993801121 = 987030^2 + 1070511^2 .

It is not a de Polignac number, because 2120222022021 - 2¹ = 2120222022019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120222021985 and 2120222022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120222022029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1391896 + ... + 2485521.

Almost surely, 2^{2120222022021} is an apocalyptic number.

It is an amenable number.

2120222022021 is a deficient number, since it is larger than the sum of its proper divisors (942372094951).

2120222022021 is a wasteful number, since it uses less digits than its factorization.

2120222022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3938180 (or 3938177 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2120222022021 its reverse (1202202220212), we get a palindrome (3322424242233).

The spelling of 2120222022021 in words is "two trillion, one hundred twenty billion, two hundred twenty-two million, twenty-two thousand, twenty-one".