4405612026121 has 4 divisors (see below), whose sum is σ = 4405890578452. Its totient is φ = 4405333473792.

The previous prime is 4405612026113. The next prime is 4405612026187. The reversal of 4405612026121 is 1216202165044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1885252572025 + 2520359454096 = 1373045^2 + 1587564^2 .

It is a cyclic number.

It is not a de Polignac number, because 4405612026121 - 2³ = 4405612026113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4405612026191) 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, 139252440 + ... + 139284073.

It is an arithmetic number, because the mean of its divisors is an integer number (1101472644613).

Almost surely, 2^{4405612026121} is an apocalyptic number.

It is an amenable number.

4405612026121 is a deficient number, since it is larger than the sum of its proper divisors (278552331).

4405612026121 is a wasteful number, since it uses less digits than its factorization.

4405612026121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278552330.

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 4405612026121 in words is "four trillion, four hundred five billion, six hundred twelve million, twenty-six thousand, one hundred twenty-one".