22121510101 has 4 divisors (see below), whose sum is σ = 23083314912. Its totient is φ = 21159705292.

The previous prime is 22121510071. The next prime is 22121510111. The reversal of 22121510101 is 10101512122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121510101 - 2¹⁷ = 22121379029 is a prime.

It is a super-2 number, since 2×22121510101² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121510111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480902371 + ... + 480902416.

It is an arithmetic number, because the mean of its divisors is an integer number (5770828728).

Almost surely, 2^22121510101 is an apocalyptic number.

It is an amenable number.

22121510101 is a deficient number, since it is larger than the sum of its proper divisors (961804811).

22121510101 is an equidigital number, since it uses as much as digits as its factorization.

22121510101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961804810.

The product of its (nonzero) digits is 40, while the sum is 16.

The spelling of 22121510101 in words is "twenty-two billion, one hundred twenty-one million, five hundred ten thousand, one hundred one".