4445004123121 has 4 divisors (see below), whose sum is σ = 4445019063792. Its totient is φ = 4444989182452.

The previous prime is 4445004123097. The next prime is 4445004123139. The reversal of 4445004123121 is 1213214005444.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4445004123121 - 2¹⁷ = 4445003992049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4445004123181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7014811 + ... + 7622176.

It is an arithmetic number, because the mean of its divisors is an integer number (1111254765948).

Almost surely, 2^{4445004123121} is an apocalyptic number.

It is an amenable number.

4445004123121 is a deficient number, since it is larger than the sum of its proper divisors (14940671).

4445004123121 is a wasteful number, since it uses less digits than its factorization.

4445004123121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14940670.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 4445004123121 its reverse (1213214005444), we get a palindrome (5658218128565).

The spelling of 4445004123121 in words is "four trillion, four hundred forty-five billion, four million, one hundred twenty-three thousand, one hundred twenty-one".