1220112122211 has 12 divisors (see below), whose sum is σ = 1810016181792. Its totient is φ = 791424079056.

The previous prime is 1220112122183. The next prime is 1220112122227. The reversal of 1220112122211 is 1122212110221.

1220112122211 is a `hidden beast` number, since 1 + 220 + 11 + 212 + 221 + 1 = 666.

It is not a de Polignac number, because 1220112122211 - 2⁵ = 1220112122179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220112120211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1831999851 + ... + 1832000516.

It is an arithmetic number, because the mean of its divisors is an integer number (150834681816).

Almost surely, 2^{1220112122211} is an apocalyptic number.

1220112122211 is a deficient number, since it is larger than the sum of its proper divisors (589904059581).

1220112122211 is a wasteful number, since it uses less digits than its factorization.

1220112122211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664000410 (or 3664000407 counting only the distinct ones).

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

Adding to 1220112122211 its reverse (1122212110221), we get a palindrome (2342324232432).

The spelling of 1220112122211 in words is "one trillion, two hundred twenty billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".