21122100112201 has 16 divisors (see below), whose sum is σ = 23149968589440. Its totient is φ = 19112304568320.

The previous prime is 21122100112171. The next prime is 21122100112219. The reversal of 21122100112201 is 10221100122112.

It is a cyclic number.

It is not a de Polignac number, because 21122100112201 - 2¹³ = 21122100104009 is a prime.

It is a super-2 number, since 2×21122100112201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122100112291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169495 + ... + 6501763.

It is an arithmetic number, because the mean of its divisors is an integer number (1446873036840).

Almost surely, 2^{21122100112201} is an apocalyptic number.

It is an amenable number.

21122100112201 is a deficient number, since it is larger than the sum of its proper divisors (2027868477239).

21122100112201 is a wasteful number, since it uses less digits than its factorization.

21122100112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6333696.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21122100112201 its reverse (10221100122112), we get a palindrome (31343200234313).

The spelling of 21122100112201 in words is "twenty-one trillion, one hundred twenty-two billion, one hundred million, one hundred twelve thousand, two hundred one".