94021221293 has 4 divisors (see below), whose sum is σ = 96562335420. Its totient is φ = 91480107168.

The previous prime is 94021221257. The next prime is 94021221311. The reversal of 94021221293 is 39212212049.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39212212049 = 491 ⋅79861939.

It can be written as a sum of positive squares in 2 ways, for example, as 46627060489 + 47394160804 = 215933^2 + 217702^2 .

It is a cyclic number.

It is not a de Polignac number, because 94021221293 - 2²⁶ = 93954112429 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 (94021221493) 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, 1270557008 + ... + 1270557081.

It is an arithmetic number, because the mean of its divisors is an integer number (24140583855).

Almost surely, 2^94021221293 is an apocalyptic number.

It is an amenable number.

94021221293 is a deficient number, since it is larger than the sum of its proper divisors (2541114127).

94021221293 is a wasteful number, since it uses less digits than its factorization.

94021221293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541114126.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 94021221293 in words is "ninety-four billion, twenty-one million, two hundred twenty-one thousand, two hundred ninety-three".