22021220012001 has 64 divisors (see below), whose sum is σ = 36593321656320. Its totient is φ = 11495054580480.

The previous prime is 22021220011949. The next prime is 22021220012041. The reversal of 22021220012001 is 10021002212022.

It is not a de Polignac number, because 22021220012001 - 2²² = 22021215817697 is a prime.

It is a super-4 number, since 4×22021220012001⁴ (a number of 54 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (22021220012041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 212575 + ... + 6639851.

It is an arithmetic number, because the mean of its divisors is an integer number (571770650880).

Almost surely, 2^{22021220012001} is an apocalyptic number.

22021220012001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22021220012001 is a deficient number, since it is larger than the sum of its proper divisors (14572101644319).

22021220012001 is a wasteful number, since it uses less digits than its factorization.

22021220012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427614.

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

Adding to 22021220012001 its reverse (10021002212022), we get a palindrome (32042222224023).

The spelling of 22021220012001 in words is "twenty-two trillion, twenty-one billion, two hundred twenty million, twelve thousand, one".