2122220022021 has 24 divisors (see below), whose sum is σ = 3344299979904. Its totient is φ = 1286118682560.

The previous prime is 2122220022019. The next prime is 2122220022029. The reversal of 2122220022021 is 1202200222212.

2122220022021 is a `hidden beast` number, since 2 + 1 + 222 + 200 + 220 + 21 = 666.

It is not a de Polignac number, because 2122220022021 - 2¹ = 2122220022019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122220021985 and 2122220022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122220022029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1096785 + ... + 2333961.

It is an arithmetic number, because the mean of its divisors is an integer number (139345832496).

Almost surely, 2^{2122220022021} is an apocalyptic number.

It is an amenable number.

2122220022021 is a deficient number, since it is larger than the sum of its proper divisors (1222079957883).

2122220022021 is a wasteful number, since it uses less digits than its factorization.

2122220022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254521 (or 1254518 counting only the distinct ones).

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

Adding to 2122220022021 its reverse (1202200222212), we get a palindrome (3324420244233).

The spelling of 2122220022021 in words is "two trillion, one hundred twenty-two billion, two hundred twenty million, twenty-two thousand, twenty-one".