45205205123121 has 8 divisors (see below), whose sum is σ = 60284783119200. Its totient is φ = 30131215271232.

The previous prime is 45205205123101. The next prime is 45205205123129. The reversal of 45205205123121 is 12132150250254.

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

It is not a de Polignac number, because 45205205123121 - 2¹⁰ = 45205205122097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45205205123129) 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, 1397017171 + ... + 1397049528.

It is an arithmetic number, because the mean of its divisors is an integer number (7535597889900).

Almost surely, 2^{45205205123121} is an apocalyptic number.

It is an amenable number.

45205205123121 is a deficient number, since it is larger than the sum of its proper divisors (15079577996079).

45205205123121 is a wasteful number, since it uses less digits than its factorization.

45205205123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794072095.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 45205205123121 its reverse (12132150250254), we get a palindrome (57337355373375).

The spelling of 45205205123121 in words is "forty-five trillion, two hundred five billion, two hundred five million, one hundred twenty-three thousand, one hundred twenty-one".