1221413230291 has 8 divisors (see below), whose sum is σ = 1244485385424. Its totient is φ = 1198342061280.

The previous prime is 1221413230267. The next prime is 1221413230307. The reversal of 1221413230291 is 1920323141221.

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-1221413230291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221413230091) 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, 2551065 + ... + 2991781.

It is an arithmetic number, because the mean of its divisors is an integer number (155560673178).

Almost surely, 2^{1221413230291} is an apocalyptic number.

1221413230291 is a deficient number, since it is larger than the sum of its proper divisors (23072155133).

1221413230291 is an equidigital number, since it uses as much as digits as its factorization.

1221413230291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493061.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 1221413230291 in words is "one trillion, two hundred twenty-one billion, four hundred thirteen million, two hundred thirty thousand, two hundred ninety-one".