21102013010 has 32 divisors (see below), whose sum is σ = 40914961920. Its totient is φ = 7789699008.

The previous prime is 21102012989. The next prime is 21102013013. The reversal of 21102013010 is 1031020112.

It is a junction number, because it is equal to n+sod(n) for n = 21102012982 and 21102013000.

It is not an unprimeable number, because it can be changed into a prime (21102013013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 626171 + ... + 659009.

It is an arithmetic number, because the mean of its divisors is an integer number (1278592560).

Almost surely, 2^21102013010 is an apocalyptic number.

21102013010 is a deficient number, since it is larger than the sum of its proper divisors (19812948910).

21102013010 is a wasteful number, since it uses less digits than its factorization.

21102013010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37802.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21102013010 its reverse (1031020112), we get a palindrome (22133033122).

The spelling of 21102013010 in words is "twenty-one billion, one hundred two million, thirteen thousand, ten".