1220003111112 has 64 divisors (see below), whose sum is σ = 3089029728960. Its totient is φ = 401472000000.

The previous prime is 1220003111101. The next prime is 1220003111191. The reversal of 1220003111112 is 2111113000221.

It is a super-2 number, since 2×1220003111112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220003111091 and 1220003111100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2486112 + ... + 2936112.

It is an arithmetic number, because the mean of its divisors is an integer number (48266089515).

Almost surely, 2^{1220003111112} is an apocalyptic number.

1220003111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1220003111112 is an abundant number, since it is smaller than the sum of its proper divisors (1869026617848).

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

1220003111112 is a wasteful number, since it uses less digits than its factorization.

1220003111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451454 (or 451450 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1220003111112 its reverse (2111113000221), we get a palindrome (3331116111333).

The spelling of 1220003111112 in words is "one trillion, two hundred twenty billion, three million, one hundred eleven thousand, one hundred twelve".