21311300230330 has 64 divisors (see below), whose sum is σ = 42264967667328. Its totient is φ = 7672371516160.

The previous prime is 21311300230313. The next prime is 21311300230349. The reversal of 21311300230330 is 3303200311312.

It is a super-2 number, since 2×21311300230330² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18423744 + ... + 19546276.

It is an arithmetic number, because the mean of its divisors is an integer number (660390119802).

Almost surely, 2^{21311300230330} is an apocalyptic number.

21311300230330 is a deficient number, since it is larger than the sum of its proper divisors (20953667436998).

21311300230330 is a wasteful number, since it uses less digits than its factorization.

21311300230330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124271.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21311300230330 its reverse (3303200311312), we get a palindrome (24614500541642).

The spelling of 21311300230330 in words is "twenty-one trillion, three hundred eleven billion, three hundred million, two hundred thirty thousand, three hundred thirty".