1245354221 has 8 divisors (see below), whose sum is σ = 1356103200. Its totient is φ = 1139125680.

The previous prime is 1245354203. The next prime is 1245354239. The reversal of 1245354221 is 1224535421.

It is an interprime number because it is at equal distance from previous prime (1245354203) and next prime (1245354239).

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

It is a cyclic number.

It is not a de Polignac number, because 1245354221 - 2¹⁴ = 1245337837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245354421) 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, 1129535 + ... + 1130636.

It is an arithmetic number, because the mean of its divisors is an integer number (169512900).

Almost surely, 2^1245354221 is an apocalyptic number.

It is an amenable number.

1245354221 is a deficient number, since it is larger than the sum of its proper divisors (110748979).

1245354221 is a wasteful number, since it uses less digits than its factorization.

1245354221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260219.

The product of its digits is 9600, while the sum is 29.

The square root of 1245354221 is about 35289.5766622384. The cubic root of 1245354221 is about 1075.8811512780.

Adding to 1245354221 its reverse (1224535421), we get a palindrome (2469889642).

The spelling of 1245354221 in words is "one billion, two hundred forty-five million, three hundred fifty-four thousand, two hundred twenty-one".