22321045621 has 16 divisors (see below), whose sum is σ = 25763515776. Its totient is φ = 18942227136.

The previous prime is 22321045603. The next prime is 22321045631. The reversal of 22321045621 is 12654012322.

It is not a de Polignac number, because 22321045621 - 2⁷ = 22321045493 is a prime.

It is a super-3 number, since 3×22321045621³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22321045621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321045631) 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, 1397935 + ... + 1413811.

It is an arithmetic number, because the mean of its divisors is an integer number (1610219736).

Almost surely, 2^22321045621 is an apocalyptic number.

It is an amenable number.

22321045621 is a deficient number, since it is larger than the sum of its proper divisors (3442470155).

22321045621 is a wasteful number, since it uses less digits than its factorization.

22321045621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 22321045621 its reverse (12654012322), we get a palindrome (34975057943).

The spelling of 22321045621 in words is "twenty-two billion, three hundred twenty-one million, forty-five thousand, six hundred twenty-one".