2120022202221 has 128 divisors (see below), whose sum is σ = 3999687168000. Its totient is φ = 1100206800000.

The previous prime is 2120022202187. The next prime is 2120022202261. The reversal of 2120022202221 is 1222022200212.

2120022202221 is a `hidden beast` number, since 21 + 200 + 2 + 220 + 2 + 221 = 666.

It is not a de Polignac number, because 2120022202221 - 2⁹ = 2120022201709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2120022202194 and 2120022202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120022202261) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 107056521 + ... + 107076321.

It is an arithmetic number, because the mean of its divisors is an integer number (31247556000).

Almost surely, 2^{2120022202221} is an apocalyptic number.

2120022202221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2120022202221 is a deficient number, since it is larger than the sum of its proper divisors (1879664965779).

2120022202221 is a wasteful number, since it uses less digits than its factorization.

2120022202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20893 (or 20873 counting only the distinct ones).

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

Adding to 2120022202221 its reverse (1222022200212), we get a palindrome (3342044402433).

The spelling of 2120022202221 in words is "two trillion, one hundred twenty billion, twenty-two million, two hundred two thousand, two hundred twenty-one".