1213021001112 has 64 divisors (see below), whose sum is σ = 3212920533600. Its totient is φ = 380320634880.

The previous prime is 1213021001111. The next prime is 1213021001123. The reversal of 1213021001112 is 2111001203121.

It is a junction number, because it is equal to n+sod(n) for n = 1213021001091 and 1213021001100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213021001111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255687 + ... + 1578422.

Almost surely, 2^{1213021001112} is an apocalyptic number.

1213021001112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213021001112 is an abundant number, since it is smaller than the sum of its proper divisors (1999899532488).

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

1213021001112 is a wasteful number, since it uses less digits than its factorization.

1213021001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835756 (or 1835752 counting only the distinct ones).

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

Adding to 1213021001112 its reverse (2111001203121), we get a palindrome (3324022204233).

The spelling of 1213021001112 in words is "one trillion, two hundred thirteen billion, twenty-one million, one thousand, one hundred twelve".