21220012113201 has 32 divisors (see below), whose sum is σ = 34390498406400. Its totient is φ = 12824789901840.

The previous prime is 21220012113191. The next prime is 21220012113221. The reversal of 21220012113201 is 10231121002212.

21220012113201 is a `hidden beast` number, since 2 + 1 + 220 + 0 + 121 + 1 + 320 + 1 = 666.

It is not a de Polignac number, because 21220012113201 - 2¹⁵ = 21220012080433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21220012113221) 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, 99402921 + ... + 99616166.

It is an arithmetic number, because the mean of its divisors is an integer number (1074703075200).

Almost surely, 2^{21220012113201} is an apocalyptic number.

It is an amenable number.

21220012113201 is a deficient number, since it is larger than the sum of its proper divisors (13170486293199).

21220012113201 is a wasteful number, since it uses less digits than its factorization.

21220012113201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199019466 (or 199019460 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21220012113201 its reverse (10231121002212), we get a palindrome (31451133115413).

The spelling of 21220012113201 in words is "twenty-one trillion, two hundred twenty billion, twelve million, one hundred thirteen thousand, two hundred one".