22102021001 has 4 divisors (see below), whose sum is σ = 22103569104. Its totient is φ = 22100472900.

The previous prime is 22102020979. The next prime is 22102021021. The reversal of 22102021001 is 10012020122.

It is a happy number.

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 22102021001 - 2¹⁸ = 22101758857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102021021) 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, 752435 + ... + 781256.

It is an arithmetic number, because the mean of its divisors is an integer number (5525892276).

Almost surely, 2^22102021001 is an apocalyptic number.

It is an amenable number.

22102021001 is a deficient number, since it is larger than the sum of its proper divisors (1548103).

22102021001 is a wasteful number, since it uses less digits than its factorization.

22102021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548102.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22102021001 its reverse (10012020122), we get a palindrome (32114041123).

The spelling of 22102021001 in words is "twenty-two billion, one hundred two million, twenty-one thousand, one".