121215303405051 has 8 divisors (see below), whose sum is σ = 171127487160144. Its totient is φ = 76056660960000.

The previous prime is 121215303405043. The next prime is 121215303405149. The reversal of 121215303405051 is 150504303512121.

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

It is not a de Polignac number, because 121215303405051 - 2³ = 121215303405043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121215303405151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1188385327450 + ... + 1188385327551.

It is an arithmetic number, because the mean of its divisors is an integer number (21390935895018).

Almost surely, 2^{121215303405051} is an apocalyptic number.

121215303405051 is a deficient number, since it is larger than the sum of its proper divisors (49912183755093).

121215303405051 is a wasteful number, since it uses less digits than its factorization.

121215303405051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376770655021.

The product of its (nonzero) digits is 18000, while the sum is 33.

Adding to 121215303405051 its reverse (150504303512121), we get a palindrome (271719606917172).

The spelling of 121215303405051 in words is "one hundred twenty-one trillion, two hundred fifteen billion, three hundred three million, four hundred five thousand, fifty-one".