1213292088440 has 64 divisors (see below), whose sum is σ = 2799454664160. Its totient is φ = 473001822720.

The previous prime is 1213292088383. The next prime is 1213292088469. The reversal of 1213292088440 is 448802923121.

It is a junction number, because it is equal to n+sod(n) for n = 1213292088391 and 1213292088400.

It is a congruent number.

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, 27842 + ... + 1557998.

Almost surely, 2^{1213292088440} is an apocalyptic number.

1213292088440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213292088440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1399727332080).

1213292088440 is an abundant number, since it is smaller than the sum of its proper divisors (1586162575720).

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

1213292088440 is a wasteful number, since it uses less digits than its factorization.

1213292088440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530672 (or 1530668 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The spelling of 1213292088440 in words is "one trillion, two hundred thirteen billion, two hundred ninety-two million, eighty-eight thousand, four hundred forty".