1100102120021 has 16 divisors (see below), whose sum is σ = 1176636135168. Its totient is φ = 1024890451200.

The previous prime is 1100102119997. The next prime is 1100102120041. The reversal of 1100102120021 is 1200212010011.

It is a de Polignac number, because none of the positive numbers 2^k-1100102120021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100102119984 and 1100102120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100102120041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3910631 + ... + 4182491.

It is an arithmetic number, because the mean of its divisors is an integer number (73539758448).

Almost surely, 2^{1100102120021} is an apocalyptic number.

It is an amenable number.

1100102120021 is a deficient number, since it is larger than the sum of its proper divisors (76534015147).

1100102120021 is a wasteful number, since it uses less digits than its factorization.

1100102120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274292.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100102120021 its reverse (1200212010011), we get a palindrome (2300314130032).

The spelling of 1100102120021 in words is "one trillion, one hundred billion, one hundred two million, one hundred twenty thousand, twenty-one".