1220111101112 has 16 divisors (see below), whose sum is σ = 2387173893840. Its totient is φ = 583531396096.

The previous prime is 1220111101091. The next prime is 1220111101133. The reversal of 1220111101112 is 2111011110221.

It is an interprime number because it is at equal distance from previous prime (1220111101091) and next prime (1220111101133).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315519113 + ... + 3315519480.

It is an arithmetic number, because the mean of its divisors is an integer number (149198368365).

Almost surely, 2^{1220111101112} is an apocalyptic number.

It is an amenable number.

1220111101112 is a deficient number, since it is larger than the sum of its proper divisors (1167062792728).

1220111101112 is a wasteful number, since it uses less digits than its factorization.

1220111101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631038622 (or 6631038618 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1220111101112 its reverse (2111011110221), we get a palindrome (3331122211333).

The spelling of 1220111101112 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred one thousand, one hundred twelve".