1220211112112 has 20 divisors (see below), whose sum is σ = 2364471282456. Its totient is φ = 610024974720.

The previous prime is 1220211112111. The next prime is 1220211112123. The reversal of 1220211112112 is 2112111120221.

It is not an unprimeable number, because it can be changed into a prime (1220211112111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4911314 + ... + 5153777.

Almost surely, 2^{1220211112112} is an apocalyptic number.

It is an amenable number.

1220211112112 is a deficient number, since it is larger than the sum of its proper divisors (1144260170344).

1220211112112 is a wasteful number, since it uses less digits than its factorization.

1220211112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10072676 (or 10072670 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1220211112112 its reverse (2112111120221), we get a palindrome (3332322232333).

The spelling of 1220211112112 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred twelve thousand, one hundred twelve".