100011111010101 has 24 divisors (see below), whose sum is σ = 148369984498944. Its totient is φ = 64869818807520.

The previous prime is 100011111010099. The next prime is 100011111010127. The reversal of 100011111010101 is 101010111110001.

It is not a de Polignac number, because 100011111010101 - 2¹ = 100011111010099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100011111012101) 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, 4412740 + ... + 14815346.

It is an arithmetic number, because the mean of its divisors is an integer number (6182082687456).

Almost surely, 2^{100011111010101} is an apocalyptic number.

It is an amenable number.

100011111010101 is a deficient number, since it is larger than the sum of its proper divisors (48358873488843).

100011111010101 is a wasteful number, since it uses less digits than its factorization.

100011111010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10431521 (or 10431518 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 100011111010101 its reverse (101010111110001), we get a palindrome (201021222120102).

The spelling of 100011111010101 in words is "one hundred trillion, eleven billion, one hundred eleven million, ten thousand, one hundred one".