21022210202001 has 12 divisors (see below), whose sum is σ = 29029480916592. Its totient is φ = 13531537599664.

The previous prime is 21022210201961. The next prime is 21022210202011. The reversal of 21022210202001 is 10020201222012.

It is not a de Polignac number, because 21022210202001 - 2⁷ = 21022210201873 is a prime.

It is a super-2 number, since 2×21022210202001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21022210202011) 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, 4166111271 + ... + 4166116316.

It is an arithmetic number, because the mean of its divisors is an integer number (2419123409716).

Almost surely, 2^{21022210202001} is an apocalyptic number.

It is an amenable number.

21022210202001 is a deficient number, since it is larger than the sum of its proper divisors (8007270714591).

21022210202001 is an equidigital number, since it uses as much as digits as its factorization.

21022210202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8332227648 (or 8332227619 counting only the distinct ones).

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

Adding to 21022210202001 its reverse (10020201222012), we get a palindrome (31042411424013).

The spelling of 21022210202001 in words is "twenty-one trillion, twenty-two billion, two hundred ten million, two hundred two thousand, one".