21112222010001 has 32 divisors (see below), whose sum is σ = 31126648025088. Its totient is φ = 12660638833920.

The previous prime is 21112222009937. The next prime is 21112222010017. The reversal of 21112222010001 is 10001022221112.

It is not a de Polignac number, because 21112222010001 - 2⁶ = 21112222009937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21112222010021) 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, 5866551 + ... + 8754476.

It is an arithmetic number, because the mean of its divisors is an integer number (972707750784).

Almost surely, 2^{21112222010001} is an apocalyptic number.

It is an amenable number.

21112222010001 is a deficient number, since it is larger than the sum of its proper divisors (10014426015087).

21112222010001 is a wasteful number, since it uses less digits than its factorization.

21112222010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14622301.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21112222010001 its reverse (10001022221112), we get a palindrome (31113244231113).

The spelling of 21112222010001 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty-two million, ten thousand, one".