21197773030 has 32 divisors (see below), whose sum is σ = 45013524480. Its totient is φ = 7033361760.

The previous prime is 21197773019. The next prime is 21197773033. The reversal of 21197773030 is 3037779112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21197773033) 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, 4882110 + ... + 4886449.

It is an arithmetic number, because the mean of its divisors is an integer number (1406672640).

Almost surely, 2^21197773030 is an apocalyptic number.

21197773030 is an abundant number, since it is smaller than the sum of its proper divisors (23815751450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21197773030 is a wasteful number, since it uses less digits than its factorization.

21197773030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768604.

The product of its (nonzero) digits is 55566, while the sum is 40.

The spelling of 21197773030 in words is "twenty-one billion, one hundred ninety-seven million, seven hundred seventy-three thousand, thirty".