21113101011010 has 8 divisors (see below), whose sum is σ = 38003581819836. Its totient is φ = 8445240404400.

The previous prime is 21113101011001. The next prime is 21113101011011. The reversal of 21113101011010 is 1011010131112.

It can be written as a sum of positive squares in 2 ways, for example, as 20099557462009 + 1013543549001 = 4483253^2 + 1006749^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21113101011010² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113101011011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055655050541 + ... + 1055655050560.

Almost surely, 2^{21113101011010} is an apocalyptic number.

21113101011010 is a deficient number, since it is larger than the sum of its proper divisors (16890480808826).

21113101011010 is a wasteful number, since it uses less digits than its factorization.

21113101011010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111310101108.

The product of its (nonzero) digits is 6, while the sum is 13.

Adding to 21113101011010 its reverse (1011010131112), we get a palindrome (22124111142122).

The spelling of 21113101011010 in words is "twenty-one trillion, one hundred thirteen billion, one hundred one million, eleven thousand, ten".