21110013332220 has 48 divisors (see below), whose sum is σ = 59108628126240. Its totient is φ = 5629280622336.

The previous prime is 21110013332197. The next prime is 21110013332231. The reversal of 21110013332220 is 2223331001112.

It is a super-2 number, since 2×21110013332220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4477354 + ... + 7890926.

It is an arithmetic number, because the mean of its divisors is an integer number (1231429752630).

Almost surely, 2^{21110013332220} is an apocalyptic number.

21110013332220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110013332220 is an abundant number, since it is smaller than the sum of its proper divisors (37998614794020).

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

21110013332220 is a wasteful number, since it uses less digits than its factorization.

21110013332220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516654 (or 3516652 counting only the distinct ones).

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

Adding to 21110013332220 its reverse (2223331001112), we get a palindrome (23333344333332).

The spelling of 21110013332220 in words is "twenty-one trillion, one hundred ten billion, thirteen million, three hundred thirty-two thousand, two hundred twenty".