20011100001102 has 48 divisors (see below), whose sum is σ = 49825059359712. Its totient is φ = 5685868975680.

The previous prime is 20011100001049. The next prime is 20011100001161. The reversal of 20011100001102 is 20110000111002.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438701653 + ... + 438747264.

It is an arithmetic number, because the mean of its divisors is an integer number (1038022069994).

Almost surely, 2^{20011100001102} is an apocalyptic number.

20011100001102 is an abundant number, since it is smaller than the sum of its proper divisors (29813959358610).

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

20011100001102 is a wasteful number, since it uses less digits than its factorization.

20011100001102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877449113 (or 877449110 counting only the distinct ones).

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

Adding to 20011100001102 its reverse (20110000111002), we get a palindrome (40121100112104).

The spelling of 20011100001102 in words is "twenty trillion, eleven billion, one hundred million, one thousand, one hundred two".