22120101001021 has 16 divisors (see below), whose sum is σ = 23708236680000. Its totient is φ = 20575235419776.

The previous prime is 22120101001013. The next prime is 22120101001027. The reversal of 22120101001021 is 12010010102122.

It is a cyclic number.

It is not a de Polignac number, because 22120101001021 - 2³ = 22120101001013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22120101000992 and 22120101001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120101001027) 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, 11288706 + ... + 13102483.

It is an arithmetic number, because the mean of its divisors is an integer number (1481764792500).

Almost surely, 2^{22120101001021} is an apocalyptic number.

It is an amenable number.

22120101001021 is a deficient number, since it is larger than the sum of its proper divisors (1588135678979).

22120101001021 is a wasteful number, since it uses less digits than its factorization.

22120101001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24392076.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22120101001021 its reverse (12010010102122), we get a palindrome (34130111103143).

The spelling of 22120101001021 in words is "twenty-two trillion, one hundred twenty billion, one hundred one million, one thousand, twenty-one".