121005051 has 8 divisors (see below), whose sum is σ = 161701200. Its totient is φ = 80489472.

The previous prime is 121005043. The next prime is 121005089. The reversal of 121005051 is 150500121.

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

It is not a de Polignac number, because 121005051 - 2³ = 121005043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121005051.

It is not an unprimeable number, because it can be changed into a prime (121005751) 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, 43570 + ... + 46263.

It is an arithmetic number, because the mean of its divisors is an integer number (20212650).

Almost surely, 2^121005051 is an apocalyptic number.

121005051 is a deficient number, since it is larger than the sum of its proper divisors (40696149).

121005051 is an equidigital number, since it uses as much as digits as its factorization.

121005051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90285.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 121005051 is about 11000.2295885131. The cubic root of 121005051 is about 494.6156265122.

Adding to 121005051 its reverse (150500121), we get a palindrome (271505172).

The spelling of 121005051 in words is "one hundred twenty-one million, five thousand, fifty-one".