110021120001 has 12 divisors (see below), whose sum is σ = 171143964628. Its totient is φ = 67705304544.

The previous prime is 110021119993. The next prime is 110021120089. The reversal of 110021120001 is 100021120011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23025027600 + 86996092401 = 151740^2 + 294951^2 .

It is not a de Polignac number, because 110021120001 - 2³ = 110021119993 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 (110021120801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470175610 + ... + 470175843.

Almost surely, 2^110021120001 is an apocalyptic number.

It is an amenable number.

110021120001 is a deficient number, since it is larger than the sum of its proper divisors (61122844627).

110021120001 is a wasteful number, since it uses less digits than its factorization.

110021120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940351472 (or 940351469 counting only the distinct ones).

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

Adding to 110021120001 its reverse (100021120011), we get a palindrome (210042240012).

The spelling of 110021120001 in words is "one hundred ten billion, twenty-one million, one hundred twenty thousand, one".