21120222020001 has 12 divisors (see below), whose sum is σ = 30493101615408. Its totient is φ = 12997059704304.

The previous prime is 21120222019997. The next prime is 21120222020041. The reversal of 21120222020001 is 10002022202112.

It is not a de Polignac number, because 21120222020001 - 2² = 21120222019997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120222020041) 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, 20828620815 + ... + 20828621828.

It is an arithmetic number, because the mean of its divisors is an integer number (2541091801284).

Almost surely, 2^{21120222020001} is an apocalyptic number.

It is an amenable number.

21120222020001 is a deficient number, since it is larger than the sum of its proper divisors (9372879595407).

21120222020001 is a wasteful number, since it uses less digits than its factorization.

21120222020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41657242672 (or 41657242659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21120222020001 its reverse (10002022202112), we get a palindrome (31122244222113).

The spelling of 21120222020001 in words is "twenty-one trillion, one hundred twenty billion, two hundred twenty-two million, twenty thousand, one".