1201221111112 has 64 divisors (see below), whose sum is σ = 2464673702400. Its totient is φ = 544315453440.

The previous prime is 1201221111061. The next prime is 1201221111161. The reversal of 1201221111112 is 2111111221021.

It is a super-2 number, since 2×1201221111112² (a number of 25 digits) contains 22 as substring.

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, 72323913 + ... + 72340519.

It is an arithmetic number, because the mean of its divisors is an integer number (38510526600).

Almost surely, 2^{1201221111112} is an apocalyptic number.

It is an amenable number.

1201221111112 is an abundant number, since it is smaller than the sum of its proper divisors (1263452591288).

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

1201221111112 is a wasteful number, since it uses less digits than its factorization.

1201221111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19126 (or 19122 counting only the distinct ones).

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

Adding to 1201221111112 its reverse (2111111221021), we get a palindrome (3312332332133).

The spelling of 1201221111112 in words is "one trillion, two hundred one billion, two hundred twenty-one million, one hundred eleven thousand, one hundred twelve".