1215445021112 has 16 divisors (see below), whose sum is σ = 2604525045360. Its totient is φ = 520905009024.

The previous prime is 1215445021097. The next prime is 1215445021127. The reversal of 1215445021112 is 2111205445121.

It is an interprime number because it is at equal distance from previous prime (1215445021097) and next prime (1215445021127).

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, 10852187633 + ... + 10852187744.

It is an arithmetic number, because the mean of its divisors is an integer number (162782815335).

Almost surely, 2^{1215445021112} is an apocalyptic number.

It is an amenable number.

1215445021112 is an abundant number, since it is smaller than the sum of its proper divisors (1389080024248).

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

1215445021112 is a wasteful number, since it uses less digits than its factorization.

1215445021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21704375390 (or 21704375386 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 29.

The spelling of 1215445021112 in words is "one trillion, two hundred fifteen billion, four hundred forty-five million, twenty-one thousand, one hundred twelve".