22000021010001 has 8 divisors (see below), whose sum is σ = 32592623718560. Its totient is φ = 14666680673316.

The previous prime is 22000021009957. The next prime is 22000021010039. The reversal of 22000021010001 is 10001012000022.

It is not a de Polignac number, because 22000021010001 - 2¹¹ = 22000021007953 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000021010081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407407796455 + ... + 407407796508.

It is an arithmetic number, because the mean of its divisors is an integer number (4074077964820).

Almost surely, 2^{22000021010001} is an apocalyptic number.

It is an amenable number.

22000021010001 is a deficient number, since it is larger than the sum of its proper divisors (10592602708559).

22000021010001 is an equidigital number, since it uses as much as digits as its factorization.

22000021010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814815592972 (or 814815592966 counting only the distinct ones).

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

Adding to 22000021010001 its reverse (10001012000022), we get a palindrome (32001033010023).

The spelling of 22000021010001 in words is "twenty-two trillion, twenty-one million, ten thousand, one".