2102111344220 has 24 divisors (see below), whose sum is σ = 4415532382800. Its totient is φ = 840635288192.

The previous prime is 2102111344217. The next prime is 2102111344303. The reversal of 2102111344220 is 224431112012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12995705 + ... + 13156464.

It is an arithmetic number, because the mean of its divisors is an integer number (183980515950).

Almost surely, 2^{2102111344220} is an apocalyptic number.

2102111344220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102111344220 is an abundant number, since it is smaller than the sum of its proper divisors (2313421038580).

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

2102111344220 is a wasteful number, since it uses less digits than its factorization.

2102111344220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26156197 (or 26156195 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2102111344220 its reverse (224431112012), we get a palindrome (2326542456232).

The spelling of 2102111344220 in words is "two trillion, one hundred two billion, one hundred eleven million, three hundred forty-four thousand, two hundred twenty".