121100133245 has 16 divisors (see below), whose sum is σ = 178855582080. Its totient is φ = 76652391744.

The previous prime is 121100133239. The next prime is 121100133263. The reversal of 121100133245 is 542331001121.

It is a cyclic number.

It is not a de Polignac number, because 121100133245 - 2¹⁰ = 121100132221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121100133245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133076615 + ... + 133077524.

It is an arithmetic number, because the mean of its divisors is an integer number (11178473880).

Almost surely, 2^121100133245 is an apocalyptic number.

It is an amenable number.

121100133245 is a deficient number, since it is larger than the sum of its proper divisors (57755448835).

121100133245 is a wasteful number, since it uses less digits than its factorization.

121100133245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266154164.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 121100133245 its reverse (542331001121), we get a palindrome (663431134366).

The spelling of 121100133245 in words is "one hundred twenty-one billion, one hundred million, one hundred thirty-three thousand, two hundred forty-five".