1011102001 has 16 divisors (see below), whose sum is σ = 1251903744. Its totient is φ = 795190464.

The previous prime is 1011101981. The next prime is 1011102089. The reversal of 1011102001 is 1002011101.

It is a cyclic number.

It is not a de Polignac number, because 1011102001 - 2²¹ = 1009004849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is not an unprimeable number, because it can be changed into a prime (1011102401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18070 + ... + 48463.

It is an arithmetic number, because the mean of its divisors is an integer number (78243984).

Almost surely, 2^1011102001 is an apocalyptic number.

It is an amenable number.

1011102001 is a deficient number, since it is larger than the sum of its proper divisors (240801743).

1011102001 is a wasteful number, since it uses less digits than its factorization.

1011102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66720.

The product of its (nonzero) digits is 2, while the sum is 7.

The square root of 1011102001 is about 31797.8301303721. The cubic root of 1011102001 is about 1003.6870559110.

Adding to 1011102001 its reverse (1002011101), we get a palindrome (2013113102).

The spelling of 1011102001 in words is "one billion, eleven million, one hundred two thousand, one".