2211012111220 has 48 divisors (see below), whose sum is σ = 5134614464448. Its totient is φ = 792990639360.

The previous prime is 2211012111151. The next prime is 2211012111223. The reversal of 2211012111220 is 221112101122.

It is a junction number, because it is equal to n+sod(n) for n = 2211012111194 and 2211012111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211012111223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68819934 + ... + 68852053.

It is an arithmetic number, because the mean of its divisors is an integer number (106971134676).

Almost surely, 2^{2211012111220} is an apocalyptic number.

2211012111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211012111220 is an abundant number, since it is smaller than the sum of its proper divisors (2923602353228).

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

2211012111220 is a wasteful number, since it uses less digits than its factorization.

2211012111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137672080 (or 137672078 counting only the distinct ones).

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

Adding to 2211012111220 its reverse (221112101122), we get a palindrome (2432124212342).

It can be divided in two parts, 2211012 and 111220, that added together give a palindrome (2322232).

The spelling of 2211012111220 in words is "two trillion, two hundred eleven billion, twelve million, one hundred eleven thousand, two hundred twenty".