100001011012100 has 288 divisors, whose sum is σ = 251108519692800. Its totient is φ = 34185006720000.

The previous prime is 100001011011989. The next prime is 100001011012127. The reversal of 100001011012100 is 1210110100001.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6626525555 + ... + 6626540645.

Almost surely, 2^{100001011012100} is an apocalyptic number.

100001011012100 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 100001011012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125554259846400).

100001011012100 is an abundant number, since it is smaller than the sum of its proper divisors (151107508680700).

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

100001011012100 is a wasteful number, since it uses less digits than its factorization.

100001011012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17555 (or 17548 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 100001011012100 its reverse (1210110100001), we get a palindrome (101211121112101).

The spelling of 100001011012100 in words is "one hundred trillion, one billion, eleven million, twelve thousand, one hundred".