22100230421 has 16 divisors (see below), whose sum is σ = 23014632960. Its totient is φ = 21206208240.

The previous prime is 22100230393. The next prime is 22100230457. The reversal of 22100230421 is 12403200122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22100230421 is a prime.

It is a super-2 number, since 2×22100230421² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22100230421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100260421) 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, 851210 + ... + 876788.

It is an arithmetic number, because the mean of its divisors is an integer number (1438414560).

Almost surely, 2^22100230421 is an apocalyptic number.

It is an amenable number.

22100230421 is a deficient number, since it is larger than the sum of its proper divisors (914402539).

22100230421 is a wasteful number, since it uses less digits than its factorization.

22100230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25976.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22100230421 its reverse (12403200122), we get a palindrome (34503430543).

The spelling of 22100230421 in words is "twenty-two billion, one hundred million, two hundred thirty thousand, four hundred twenty-one".