21231433135110 has 64 divisors (see below), whose sum is σ = 55597270821120. Its totient is φ = 5146132740480.

The previous prime is 21231433135097. The next prime is 21231433135183. The reversal of 21231433135110 is 1153133413212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 3577345 + ... + 7433724.

It is an arithmetic number, because the mean of its divisors is an integer number (868707356580).

Almost surely, 2^{21231433135110} is an apocalyptic number.

21231433135110 is an abundant number, since it is smaller than the sum of its proper divisors (34365837686010).

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

21231433135110 is a wasteful number, since it uses less digits than its factorization.

21231433135110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11016933.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 21231433135110 its reverse (1153133413212), we get a palindrome (22384566548322).

The spelling of 21231433135110 in words is "twenty-one trillion, two hundred thirty-one billion, four hundred thirty-three million, one hundred thirty-five thousand, one hundred ten".