20102011101 has 24 divisors (see below), whose sum is σ = 29984098560. Its totient is φ = 12964190400.

The previous prime is 20102011093. The next prime is 20102011103. The reversal of 20102011101 is 10111020102.

It is a happy number.

It is not a de Polignac number, because 20102011101 - 2³ = 20102011093 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102011103) 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, 828105 + ... + 852033.

It is an arithmetic number, because the mean of its divisors is an integer number (1249337440).

Almost surely, 2^20102011101 is an apocalyptic number.

It is an amenable number.

20102011101 is a deficient number, since it is larger than the sum of its proper divisors (9882087459).

20102011101 is a wasteful number, since it uses less digits than its factorization.

20102011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26977 (or 26974 counting only the distinct ones).

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

Adding to 20102011101 its reverse (10111020102), we get a palindrome (30213031203).

Subtracting from 20102011101 its reverse (10111020102), we obtain a palindrome (9990990999).

The spelling of 20102011101 in words is "twenty billion, one hundred two million, eleven thousand, one hundred one".