121105905437 has 8 divisors (see below), whose sum is σ = 139068982560. Its totient is φ = 104301736560.

The previous prime is 121105905419. The next prime is 121105905451. The reversal of 121105905437 is 734509501121.

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 121105905437 - 2¹⁴ = 121105889053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121105905437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121105901437) 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, 289726838 + ... + 289727255.

It is an arithmetic number, because the mean of its divisors is an integer number (17383622820).

Almost surely, 2^121105905437 is an apocalyptic number.

It is an amenable number.

121105905437 is a deficient number, since it is larger than the sum of its proper divisors (17963077123).

121105905437 is a wasteful number, since it uses less digits than its factorization.

121105905437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579454123.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 121105905437 in words is "one hundred twenty-one billion, one hundred five million, nine hundred five thousand, four hundred thirty-seven".