1212233112112 has 60 divisors (see below), whose sum is σ = 2581917494968. Its totient is φ = 550953849600.

The previous prime is 1212233112107. The next prime is 1212233112127. The reversal of 1212233112112 is 2112113322121.

It is a happy number.

It is a super-2 number, since 2×1212233112112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20544412 + ... + 20603332.

Almost surely, 2^{1212233112112} is an apocalyptic number.

It is an amenable number.

1212233112112 is an abundant number, since it is smaller than the sum of its proper divisors (1369684382856).

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

1212233112112 is a wasteful number, since it uses less digits than its factorization.

1212233112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69578 (or 69561 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 1212233112112 its reverse (2112113322121), we get a palindrome (3324346434233).

The spelling of 1212233112112 in words is "one trillion, two hundred twelve billion, two hundred thirty-three million, one hundred twelve thousand, one hundred twelve".