121445387293 has 4 divisors (see below), whose sum is σ = 121493909728. Its totient is φ = 121396864860.

The previous prime is 121445387281. The next prime is 121445387299. The reversal of 121445387293 is 392783544121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121445387293 - 2¹⁷ = 121445256221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121445387299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24257463 + ... + 24262468.

It is an arithmetic number, because the mean of its divisors is an integer number (30373477432).

Almost surely, 2^121445387293 is an apocalyptic number.

It is an amenable number.

121445387293 is a deficient number, since it is larger than the sum of its proper divisors (48522435).

121445387293 is an equidigital number, since it uses as much as digits as its factorization.

121445387293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48522434.

The product of its digits is 1451520, while the sum is 49.

The spelling of 121445387293 in words is "one hundred twenty-one billion, four hundred forty-five million, three hundred eighty-seven thousand, two hundred ninety-three".