1100020010121 has 24 divisors (see below), whose sum is σ = 1594780327296. Its totient is φ = 730645624800.

The previous prime is 1100020010107. The next prime is 1100020010189. The reversal of 1100020010121 is 1210100200011.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1100020010121 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 (1100020018121) 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, 2598096 + ... + 2991678.

It is an arithmetic number, because the mean of its divisors is an integer number (66449180304).

Almost surely, 2^{1100020010121} is an apocalyptic number.

It is an amenable number.

1100020010121 is a deficient number, since it is larger than the sum of its proper divisors (494760317175).

1100020010121 is a wasteful number, since it uses less digits than its factorization.

1100020010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394733 (or 394730 counting only the distinct ones).

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

Adding to 1100020010121 its reverse (1210100200011), we get a palindrome (2310120210132).

The spelling of 1100020010121 in words is "one trillion, one hundred billion, twenty million, ten thousand, one hundred twenty-one".