2001100920102 has 72 divisors (see below), whose sum is σ = 4651652951400. Its totient is φ = 620003165184.

The previous prime is 2001100920053. The next prime is 2001100920107. The reversal of 2001100920102 is 2010290011002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001100920107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 80827 + ... + 2002182.

Almost surely, 2^{2001100920102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001100920102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2325826475700).

2001100920102 is an abundant number, since it is smaller than the sum of its proper divisors (2650552031298).

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

2001100920102 is a wasteful number, since it uses less digits than its factorization.

2001100920102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2083142 (or 2083086 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2001100920102 its reverse (2010290011002), we get a palindrome (4011390931104).

The spelling of 2001100920102 in words is "two trillion, one billion, one hundred million, nine hundred twenty thousand, one hundred two".