21270030923 has 8 divisors (see below), whose sum is σ = 21447185760. Its totient is φ = 21093531840.

The previous prime is 21270030877. The next prime is 21270030931. The reversal of 21270030923 is 32903007212.

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

It is a cyclic number.

It is not a de Polignac number, because 21270030923 - 2²⁸ = 21001595467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21270035923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98690 + ... + 228647.

It is an arithmetic number, because the mean of its divisors is an integer number (2680898220).

Almost surely, 2^21270030923 is an apocalyptic number.

21270030923 is a deficient number, since it is larger than the sum of its proper divisors (177154837).

21270030923 is a wasteful number, since it uses less digits than its factorization.

21270030923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327877.

The product of its (nonzero) digits is 4536, while the sum is 29.

The spelling of 21270030923 in words is "twenty-one billion, two hundred seventy million, thirty thousand, nine hundred twenty-three".