101229117728 has 48 divisors (see below), whose sum is σ = 218294569080. Its totient is φ = 45994561536.

The previous prime is 101229117727. The next prime is 101229117733. The reversal of 101229117728 is 827711922101.

It can be written as a sum of positive squares in 4 ways, for example, as 100785931024 + 443186704 = 317468^2 + 21052^2 .

It is not an unprimeable number, because it can be changed into a prime (101229117727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3192551 + ... + 3224102.

Almost surely, 2^101229117728 is an apocalyptic number.

It is an amenable number.

101229117728 is an abundant number, since it is smaller than the sum of its proper divisors (117065451352).

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

101229117728 is a wasteful number, since it uses less digits than its factorization.

101229117728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416709 (or 6416701 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 41.

The spelling of 101229117728 in words is "one hundred one billion, two hundred twenty-nine million, one hundred seventeen thousand, seven hundred twenty-eight".