2211100100220 has 96 divisors (see below), whose sum is σ = 6787845388800. Its totient is φ = 533330645760.

The previous prime is 2211100100219. The next prime is 2211100100303. The reversal of 2211100100220 is 220010011122.

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 = 2211100100196 and 2211100100205.

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, 8286127 + ... + 8548806.

It is an arithmetic number, because the mean of its divisors is an integer number (70706722800).

Almost surely, 2^{2211100100220} is an apocalyptic number.

2211100100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211100100220 is an abundant number, since it is smaller than the sum of its proper divisors (4576745288580).

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

2211100100220 is a wasteful number, since it uses less digits than its factorization.

2211100100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16835155 (or 16835153 counting only the distinct ones).

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

Adding to 2211100100220 its reverse (220010011122), we get a palindrome (2431110111342).

The spelling of 2211100100220 in words is "two trillion, two hundred eleven billion, one hundred million, one hundred thousand, two hundred twenty".