2100220111020 has 48 divisors (see below), whose sum is σ = 6190122435840. Its totient is φ = 530581922496.

The previous prime is 2100220111013. The next prime is 2100220111057. The reversal of 2100220111020 is 201110220012.

It is a super-2 number, since 2×2100220111020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2100220110987 and 2100220111005.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 921148032 + ... + 921150311.

It is an arithmetic number, because the mean of its divisors is an integer number (128960884080).

Almost surely, 2^{2100220111020} is an apocalyptic number.

2100220111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100220111020 is an abundant number, since it is smaller than the sum of its proper divisors (4089902324820).

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

2100220111020 is a wasteful number, since it uses less digits than its factorization.

2100220111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842298374 (or 1842298372 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2100220111020 its reverse (201110220012), we get a palindrome (2301330331032).

The spelling of 2100220111020 in words is "two trillion, one hundred billion, two hundred twenty million, one hundred eleven thousand, twenty".