1215404045121 has 8 divisors (see below), whose sum is σ = 1852044259264. Its totient is φ = 694516597200.

The previous prime is 1215404045111. The next prime is 1215404045129.

1215404045121 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 1215404045121 - 2¹⁸ = 1215403782977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215404045129) 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, 28938191530 + ... + 28938191571.

It is an arithmetic number, because the mean of its divisors is an integer number (231505532408).

Almost surely, 2^{1215404045121} is an apocalyptic number.

It is an amenable number.

1215404045121 is a deficient number, since it is larger than the sum of its proper divisors (636640214143).

1215404045121 is an equidigital number, since it uses as much as digits as its factorization.

1215404045121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57876383111.

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 1215404045121 in words is "one trillion, two hundred fifteen billion, four hundred four million, forty-five thousand, one hundred twenty-one".