1245355114221 has 24 divisors (see below), whose sum is σ = 1847582842560. Its totient is φ = 807849806400.

The previous prime is 1245355114217. The next prime is 1245355114243. The reversal of 1245355114221 is 1224115535421.

1245355114221 is a `hidden beast` number, since 1 + 2 + 4 + 535 + 5 + 114 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 1245355114221 - 2² = 1245355114217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245355118221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4312585 + ... + 4592286.

It is an arithmetic number, because the mean of its divisors is an integer number (76982618440).

Almost surely, 2^{1245355114221} is an apocalyptic number.

It is an amenable number.

1245355114221 is a deficient number, since it is larger than the sum of its proper divisors (602227728339).

1245355114221 is a wasteful number, since it uses less digits than its factorization.

1245355114221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905297 (or 8905294 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The spelling of 1245355114221 in words is "one trillion, two hundred forty-five billion, three hundred fifty-five million, one hundred fourteen thousand, two hundred twenty-one".