21120231323010 has 64 divisors (see below), whose sum is σ = 50718197174400. Its totient is φ = 5628768921600.

The previous prime is 21120231322999. The next prime is 21120231323027. The reversal of 21120231323010 is 1032313202112.

It is a super-2 number, since 2×21120231323010² (a number of 27 digits) contains 22 as substring.

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, 535333785 + ... + 535373235.

It is an arithmetic number, because the mean of its divisors is an integer number (792471830850).

Almost surely, 2^{21120231323010} is an apocalyptic number.

21120231323010 is an abundant number, since it is smaller than the sum of its proper divisors (29597965851390).

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

21120231323010 is a wasteful number, since it uses less digits than its factorization.

21120231323010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49443.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21120231323010 its reverse (1032313202112), we get a palindrome (22152544525122).

The spelling of 21120231323010 in words is "twenty-one trillion, one hundred twenty billion, two hundred thirty-one million, three hundred twenty-three thousand, ten".