121849128007 has 8 divisors (see below), whose sum is σ = 122127703632. Its totient is φ = 121570838400.

The previous prime is 121849127987. The next prime is 121849128043. The reversal of 121849128007 is 700821948121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121849128007 - 2²³ = 121840739399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121849128077) 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, 793407 + ... + 934447.

It is an arithmetic number, because the mean of its divisors is an integer number (15265962954).

Almost surely, 2^121849128007 is an apocalyptic number.

121849128007 is a deficient number, since it is larger than the sum of its proper divisors (278575625).

121849128007 is a wasteful number, since it uses less digits than its factorization.

121849128007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143009.

The product of its (nonzero) digits is 64512, while the sum is 43.

The spelling of 121849128007 in words is "one hundred twenty-one billion, eight hundred forty-nine million, one hundred twenty-eight thousand, seven".