1221202233112 has 16 divisors (see below), whose sum is σ = 2289765915360. Its totient is φ = 610597989024.

The previous prime is 1221202233101. The next prime is 1221202233127. The reversal of 1221202233112 is 2113322021221.

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, 2816338 + ... + 3220894.

It is an arithmetic number, because the mean of its divisors is an integer number (143110369710).

Almost surely, 2^{1221202233112} is an apocalyptic number.

It is an amenable number.

1221202233112 is a deficient number, since it is larger than the sum of its proper divisors (1068563682248).

1221202233112 is a wasteful number, since it uses less digits than its factorization.

1221202233112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781890 (or 781886 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1221202233112 its reverse (2113322021221), we get a palindrome (3334524254333).

The spelling of 1221202233112 in words is "one trillion, two hundred twenty-one billion, two hundred two million, two hundred thirty-three thousand, one hundred twelve".