121100002101 has 64 divisors (see below), whose sum is σ = 196906931200. Its totient is φ = 73108459008.

The previous prime is 121100002097. The next prime is 121100002123. The reversal of 121100002101 is 101200001121.

It is a happy number.

It is not a de Polignac number, because 121100002101 - 2² = 121100002097 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100002181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4339545 + ... + 4367361.

It is an arithmetic number, because the mean of its divisors is an integer number (3076670800).

Almost surely, 2^121100002101 is an apocalyptic number.

It is an amenable number.

121100002101 is a deficient number, since it is larger than the sum of its proper divisors (75806929099).

121100002101 is a wasteful number, since it uses less digits than its factorization.

121100002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28075 (or 28069 counting only the distinct ones).

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

Adding to 121100002101 its reverse (101200001121), we get a palindrome (222300003222).

The spelling of 121100002101 in words is "one hundred twenty-one billion, one hundred million, two thousand, one hundred one".