21122022212001 has 32 divisors (see below), whose sum is σ = 33345478300800. Its totient is φ = 13340224528704.

The previous prime is 21122022211987. The next prime is 21122022212017. The reversal of 21122022212001 is 10021222022112.

It is a happy number.

21122022212001 is a `hidden beast` number, since 21 + 1 + 220 + 2 + 221 + 200 + 1 = 666.

It is not a de Polignac number, because 21122022212001 - 2¹⁰ = 21122022210977 is a prime.

It is a super-2 number, since 2×21122022212001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122022212101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254116056 + ... + 254199161.

It is an arithmetic number, because the mean of its divisors is an integer number (1042046196900).

Almost surely, 2^{21122022212001} is an apocalyptic number.

It is an amenable number.

21122022212001 is a deficient number, since it is larger than the sum of its proper divisors (12223456088799).

21122022212001 is an frugal number, since it uses more digits than its factorization.

21122022212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508315257 (or 508315239 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21122022212001 its reverse (10021222022112), we get a palindrome (31143244234113).

The spelling of 21122022212001 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-two million, two hundred twelve thousand, one".