1102121001 has 24 divisors (see below), whose sum is σ = 1648767744. Its totient is φ = 708966720.

The previous prime is 1102120967. The next prime is 1102121029. The reversal of 1102121001 is 1001212011.

It is a happy number.

It is not a de Polignac number, because 1102121001 - 2⁶ = 1102120937 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 (1102121071) 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, 11685 + ... + 48381.

It is an arithmetic number, because the mean of its divisors is an integer number (68698656).

Almost surely, 2^1102121001 is an apocalyptic number.

It is an amenable number.

1102121001 is a deficient number, since it is larger than the sum of its proper divisors (546646743).

1102121001 is a wasteful number, since it uses less digits than its factorization.

1102121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36821 (or 36818 counting only the distinct ones).

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

The square root of 1102121001 is about 33198.2077980122. The cubic root of 1102121001 is about 1032.9431643751.

Adding to 1102121001 its reverse (1001212011), we get a palindrome (2103333012).

The spelling of 1102121001 in words is "one billion, one hundred two million, one hundred twenty-one thousand, one".