45221216221261 has 8 divisors (see below), whose sum is σ = 47645485729920. Its totient is φ = 42835124185392.

The previous prime is 45221216221249. The next prime is 45221216221267. The reversal of 45221216221261 is 16212261212254.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45221216221261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45221216221261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45221216221267) 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, 9544365766 + ... + 9544370503.

It is an arithmetic number, because the mean of its divisors is an integer number (5955685716240).

Almost surely, 2^{45221216221261} is an apocalyptic number.

It is an amenable number.

45221216221261 is a deficient number, since it is larger than the sum of its proper divisors (2424269508659).

45221216221261 is a wasteful number, since it uses less digits than its factorization.

45221216221261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19088736395.

The product of its digits is 46080, while the sum is 37.

The spelling of 45221216221261 in words is "forty-five trillion, two hundred twenty-one billion, two hundred sixteen million, two hundred twenty-one thousand, two hundred sixty-one".