1102100121 has 8 divisors (see below), whose sum is σ = 1632740960. Its totient is φ = 734733396.

The previous prime is 1102100113. The next prime is 1102100143. The reversal of 1102100121 is 1210012011.

It is a happy number.

It is not a de Polignac number, because 1102100121 - 2³ = 1102100113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102100171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20409235 + ... + 20409288.

It is an arithmetic number, because the mean of its divisors is an integer number (204092620).

Almost surely, 2^1102100121 is an apocalyptic number.

It is an amenable number.

1102100121 is a deficient number, since it is larger than the sum of its proper divisors (530640839).

1102100121 is an equidigital number, since it uses as much as digits as its factorization.

1102100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40818532 (or 40818526 counting only the distinct ones).

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

The square root of 1102100121 is about 33197.8933217155. The cubic root of 1102100121 is about 1032.9366411986.

Adding to 1102100121 its reverse (1210012011), we get a palindrome (2312112132).

The spelling of 1102100121 in words is "one billion, one hundred two million, one hundred thousand, one hundred twenty-one".