110001002121 has 48 divisors (see below), whose sum is σ = 161496391680. Its totient is φ = 72143930880.

The previous prime is 110001002057. The next prime is 110001002131. The reversal of 110001002121 is 121200100011.

It is a happy number.

It is not a de Polignac number, because 110001002121 - 2⁶ = 110001002057 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 (110001002131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76762021 + ... + 76763453.

It is an arithmetic number, because the mean of its divisors is an integer number (3364508160).

Almost surely, 2^110001002121 is an apocalyptic number.

It is an amenable number.

110001002121 is a deficient number, since it is larger than the sum of its proper divisors (51495389559).

110001002121 is a wasteful number, since it uses less digits than its factorization.

110001002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2083 counting only the distinct ones).

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

Adding to 110001002121 its reverse (121200100011), we get a palindrome (231201102132).

The spelling of 110001002121 in words is "one hundred ten billion, one million, two thousand, one hundred twenty-one".