2212111011220 has 48 divisors (see below), whose sum is σ = 5117920972416. Its totient is φ = 796439600000.

The previous prime is 2212111011167. The next prime is 2212111011239. The reversal of 2212111011220 is 221101112122.

It is a junction number, because it is equal to n+sod(n) for n = 2212111011194 and 2212111011203.

It is a congruent number.

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, 49755256 + ... + 49799695.

It is an arithmetic number, because the mean of its divisors is an integer number (106623353592).

Almost surely, 2^{2212111011220} is an apocalyptic number.

2212111011220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212111011220 is an abundant number, since it is smaller than the sum of its proper divisors (2905809961196).

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

2212111011220 is a wasteful number, since it uses less digits than its factorization.

2212111011220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99555072 (or 99555070 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2212111011220 its reverse (221101112122), we get a palindrome (2433212123342).

The spelling of 2212111011220 in words is "two trillion, two hundred twelve billion, one hundred eleven million, eleven thousand, two hundred twenty".