2211112112220 has 108 divisors (see below), whose sum is σ = 7372201145400. Its totient is φ = 536027173440.

The previous prime is 2211112112191. The next prime is 2211112112249. The reversal of 2211112112220 is 222112111122.

2211112112220 is a `hidden beast` number, since 221 + 1 + 11 + 211 + 2 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (2211112112191) and next prime (2211112112249).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2211112112193 and 2211112112202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50738370 + ... + 50781929.

Almost surely, 2^{2211112112220} is an apocalyptic number.

2211112112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2211112112220 is an abundant number, since it is smaller than the sum of its proper divisors (5161089033180).

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

2211112112220 is a wasteful number, since it uses less digits than its factorization.

2211112112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101520336 (or 101520320 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2211112112220 its reverse (222112111122), we get a palindrome (2433224223342).

The spelling of 2211112112220 in words is "two trillion, two hundred eleven billion, one hundred twelve million, one hundred twelve thousand, two hundred twenty".