21120210110010 has 64 divisors (see below), whose sum is σ = 58206894865920. Its totient is φ = 4850574569280.

The previous prime is 21120210109987. The next prime is 21120210110017. The reversal of 21120210110010 is 1001101202112.

It is not an unprimeable number, because it can be changed into a prime (21120210110017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1684221012 + ... + 1684233551.

It is an arithmetic number, because the mean of its divisors is an integer number (909482732280).

Almost surely, 2^{21120210110010} is an apocalyptic number.

21120210110010 is an abundant number, since it is smaller than the sum of its proper divisors (37086684755910).

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

21120210110010 is a wasteful number, since it uses less digits than its factorization.

21120210110010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368454603.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21120210110010 its reverse (1001101202112), we get a palindrome (22121311312122).

The spelling of 21120210110010 in words is "twenty-one trillion, one hundred twenty billion, two hundred ten million, one hundred ten thousand, ten".