20211655330 has 8 divisors (see below), whose sum is σ = 36380979612. Its totient is φ = 8084662128.

The previous prime is 20211655309. The next prime is 20211655337. The reversal of 20211655330 is 3355611202.

It can be written as a sum of positive squares in 2 ways, for example, as 19723112721 + 488542609 = 140439^2 + 22103^2 .

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

It is a super-2 number, since 2×20211655330² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211655337) 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, 1010582757 + ... + 1010582776.

Almost surely, 2^20211655330 is an apocalyptic number.

20211655330 is a deficient number, since it is larger than the sum of its proper divisors (16169324282).

20211655330 is a wasteful number, since it uses less digits than its factorization.

20211655330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021165540.

The product of its (nonzero) digits is 5400, while the sum is 28.

The spelling of 20211655330 in words is "twenty billion, two hundred eleven million, six hundred fifty-five thousand, three hundred thirty".