1229558338900 has 72 divisors (see below), whose sum is σ = 2672624427200. Its totient is φ = 490997687040.

The previous prime is 1229558338859. The next prime is 1229558338907. The reversal of 1229558338900 is 98338559221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229558338907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269224417 + ... + 269228983.

Almost surely, 2^{1229558338900} is an apocalyptic number.

1229558338900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1229558338900 is an abundant number, since it is smaller than the sum of its proper divisors (1443066088300).

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

1229558338900 is a wasteful number, since it uses less digits than its factorization.

1229558338900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8513 (or 8506 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 55.

The spelling of 1229558338900 in words is "one trillion, two hundred twenty-nine billion, five hundred fifty-eight million, three hundred thirty-eight thousand, nine hundred".