1226309329880 has 128 divisors (see below), whose sum is σ = 2872461312000. Its totient is φ = 470671672320.

The previous prime is 1226309329829. The next prime is 1226309329901. The reversal of 1226309329880 is 889239036221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84688481 + ... + 84702959.

It is an arithmetic number, because the mean of its divisors is an integer number (22441104000).

Almost surely, 2^{1226309329880} is an apocalyptic number.

1226309329880 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 1226309329880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436230656000).

1226309329880 is an abundant number, since it is smaller than the sum of its proper divisors (1646151982120).

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

1226309329880 is a wasteful number, since it uses less digits than its factorization.

1226309329880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15097 (or 15093 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 1226309329880 in words is "one trillion, two hundred twenty-six billion, three hundred nine million, three hundred twenty-nine thousand, eight hundred eighty".