22101210021 has 8 divisors (see below), whose sum is σ = 32147214624. Its totient is φ = 13394672720.

The previous prime is 22101210011. The next prime is 22101210031. The reversal of 22101210021 is 12001210122.

It is an interprime number because it is at equal distance from previous prime (22101210011) and next prime (22101210031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22101210021 - 2⁵ = 22101209989 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22101209979 and 22101210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22101210011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334866786 + ... + 334866851.

It is an arithmetic number, because the mean of its divisors is an integer number (4018401828).

Almost surely, 2^22101210021 is an apocalyptic number.

It is an amenable number.

22101210021 is a deficient number, since it is larger than the sum of its proper divisors (10046004603).

22101210021 is a wasteful number, since it uses less digits than its factorization.

22101210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669733651.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22101210021 its reverse (12001210122), we get a palindrome (34102420143).

The spelling of 22101210021 in words is "twenty-two billion, one hundred one million, two hundred ten thousand, twenty-one".