2212111101220 has 24 divisors (see below), whose sum is σ = 4795286001408. Its totient is φ = 856301071200.

The previous prime is 2212111101217. The next prime is 2212111101223. The reversal of 2212111101220 is 221011112122.

It is an interprime number because it is at equal distance from previous prime (2212111101217) and next prime (2212111101223).

It is a super-2 number, since 2×2212111101220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2212111101194 and 2212111101203.

It is not an unprimeable number, because it can be changed into a prime (2212111101223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1783959946 + ... + 1783961185.

It is an arithmetic number, because the mean of its divisors is an integer number (199803583392).

Almost surely, 2^{2212111101220} is an apocalyptic number.

2212111101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2212111101220 is an abundant number, since it is smaller than the sum of its proper divisors (2583174900188).

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

2212111101220 is a wasteful number, since it uses less digits than its factorization.

2212111101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567921171 (or 3567921169 counting only the distinct ones).

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

Adding to 2212111101220 its reverse (221011112122), we get a palindrome (2433122213342).

The spelling of 2212111101220 in words is "two trillion, two hundred twelve billion, one hundred eleven million, one hundred one thousand, two hundred twenty".