2112001111220 has 96 divisors (see below), whose sum is σ = 5954957035776. Its totient is φ = 607648665600.

The previous prime is 2112001111201. The next prime is 2112001111303. The reversal of 2112001111220 is 221111002112.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2112001111195 and 2112001111204.

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, 52727261 + ... + 52767300.

It is an arithmetic number, because the mean of its divisors is an integer number (62030802456).

Almost surely, 2^{2112001111220} is an apocalyptic number.

2112001111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112001111220 is an abundant number, since it is smaller than the sum of its proper divisors (3842955924556).

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

2112001111220 is a wasteful number, since it uses less digits than its factorization.

2112001111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105494601 (or 105494599 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2112001111220 its reverse (221111002112), we get a palindrome (2333112113332).

The spelling of 2112001111220 in words is "two trillion, one hundred twelve billion, one million, one hundred eleven thousand, two hundred twenty".