1102001000121 has 18 divisors (see below), whose sum is σ = 1851661545162. Its totient is φ = 629714856960.

The previous prime is 1102001000071. The next prime is 1102001000143. The reversal of 1102001000121 is 1210001002011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1031319460521 + 70681539600 = 1015539^2 + 265860^2 .

It is not a de Polignac number, because 1102001000121 - 2⁷ = 1102000999993 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 (1102001002121) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1249433800 + ... + 1249434681.

Almost surely, 2^{1102001000121} is an apocalyptic number.

It is an amenable number.

1102001000121 is a deficient number, since it is larger than the sum of its proper divisors (749660545041).

1102001000121 is a wasteful number, since it uses less digits than its factorization.

1102001000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498868501 (or 2498868491 counting only the distinct ones).

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

Adding to 1102001000121 its reverse (1210001002011), we get a palindrome (2312002002132).

The spelling of 1102001000121 in words is "one trillion, one hundred two billion, one million, one hundred twenty-one", and thus it is an aban number.