1220111220112 has 40 divisors (see below), whose sum is σ = 2404130500800. Its totient is φ = 599739692160.

The previous prime is 1220111220073. The next prime is 1220111220121. The reversal of 1220111220112 is 2110221110221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142278 + ... + 1935205.

It is an arithmetic number, because the mean of its divisors is an integer number (60103262520).

Almost surely, 2^{1220111220112} is an apocalyptic number.

It is an amenable number.

1220111220112 is a deficient number, since it is larger than the sum of its proper divisors (1184019280688).

1220111220112 is a wasteful number, since it uses less digits than its factorization.

1220111220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3077911 (or 3077905 counting only the distinct ones).

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

Adding to 1220111220112 its reverse (2110221110221), we get a palindrome (3330332330333).

The spelling of 1220111220112 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred twelve".