133213344100 has 18 divisors (see below), whose sum is σ = 289072956914. Its totient is φ = 53285337600.

The previous prime is 133213344091. The next prime is 133213344191. The reversal of 133213344100 is 1443312331.

It can be written as a sum of positive squares in 3 ways, for example, as 1757789476 + 131455554624 = 41926^2 + 362568^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 666066621 + ... + 666066820.

Almost surely, 2^133213344100 is an apocalyptic number.

133213344100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133213344100 is an abundant number, since it is smaller than the sum of its proper divisors (155859612814).

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

133213344100 is a wasteful number, since it uses less digits than its factorization.

133213344100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332133455 (or 1332133448 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 133213344100 its reverse (1443312331), we get a palindrome (134656656431).

The spelling of 133213344100 in words is "one hundred thirty-three billion, two hundred thirteen million, three hundred forty-four thousand, one hundred".