21022000010001 has 96 divisors (see below), whose sum is σ = 33425925361920. Its totient is φ = 13179293568000.

The previous prime is 21022000009987. The next prime is 21022000010003. The reversal of 21022000010001 is 10001000022012.

It is not a de Polignac number, because 21022000010001 - 2¹³ = 21022000001809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (21022000010003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 173584596 + ... + 173705658.

It is an arithmetic number, because the mean of its divisors is an integer number (348186722520).

Almost surely, 2^{21022000010001} is an apocalyptic number.

It is an amenable number.

21022000010001 is a deficient number, since it is larger than the sum of its proper divisors (12403925351919).

21022000010001 is a wasteful number, since it uses less digits than its factorization.

21022000010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121749 (or 121737 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 21022000010001 its reverse (10001000022012), we get a palindrome (31023000032013).

The spelling of 21022000010001 in words is "twenty-one trillion, twenty-two billion, ten thousand, one".