201102101001 has 32 divisors (see below), whose sum is σ = 315844790400. Its totient is φ = 126025505280.

The previous prime is 201102100949. The next prime is 201102101027. The reversal of 201102101001 is 100101201102.

It is a happy number.

It is not a de Polignac number, because 201102101001 - 2¹⁸ = 201101838857 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (201102101201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100546 + ... + 642116.

It is an arithmetic number, because the mean of its divisors is an integer number (9870149700).

Almost surely, 2^201102101001 is an apocalyptic number.

It is an amenable number.

201102101001 is a deficient number, since it is larger than the sum of its proper divisors (114742689399).

201102101001 is a wasteful number, since it uses less digits than its factorization.

201102101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542406 (or 542400 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201102101001 its reverse (100101201102), we get a palindrome (301203302103).

The spelling of 201102101001 in words is "two hundred one billion, one hundred two million, one hundred one thousand, one".