21004321231010 has 32 divisors (see below), whose sum is σ = 42486332716800. Its totient is φ = 7418248567488.

The previous prime is 21004321230983. The next prime is 21004321231021. The reversal of 21004321231010 is 1013212340012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3512425310 + ... + 3512431289.

It is an arithmetic number, because the mean of its divisors is an integer number (1327697897400).

Almost surely, 2^{21004321231010} is an apocalyptic number.

21004321231010 is an abundant number, since it is smaller than the sum of its proper divisors (21482011485790).

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

21004321231010 is a wasteful number, since it uses less digits than its factorization.

21004321231010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7024856642.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21004321231010 its reverse (1013212340012), we get a palindrome (22017533571022).

The spelling of 21004321231010 in words is "twenty-one trillion, four billion, three hundred twenty-one million, two hundred thirty-one thousand, ten".