1225045112221 has 8 divisors (see below), whose sum is σ = 1400064735744. Its totient is φ = 1050028783440.

The previous prime is 1225045112201. The next prime is 1225045112231. The reversal of 1225045112221 is 1222115405221.

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

It is not a de Polignac number, because 1225045112221 - 2²¹ = 1225043015069 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 1225045112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225045112201) 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, 32391 + ... + 1565611.

It is an arithmetic number, because the mean of its divisors is an integer number (175008091968).

Almost surely, 2^{1225045112221} is an apocalyptic number.

It is an amenable number.

1225045112221 is a deficient number, since it is larger than the sum of its proper divisors (175019623523).

1225045112221 is a wasteful number, since it uses less digits than its factorization.

1225045112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647371.

The product of its (nonzero) digits is 3200, while the sum is 28.

The spelling of 1225045112221 in words is "one trillion, two hundred twenty-five billion, forty-five million, one hundred twelve thousand, two hundred twenty-one".