994300140221 has 4 divisors (see below), whose sum is σ = 994303050972. Its totient is φ = 994297229472.

The previous prime is 994300140167. The next prime is 994300140227. The reversal of 994300140221 is 122041003499.

994300140221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122041003499 = 9343 ⋅13062293.

It can be written as a sum of positive squares in 2 ways, for example, as 508282017721 + 486018122500 = 712939^2 + 697150^2 .

It is a cyclic number.

It is not a de Polignac number, because 994300140221 - 2²² = 994295945917 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 (994300140227) 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, 862466 + ... + 1653011.

It is an arithmetic number, because the mean of its divisors is an integer number (248575762743).

Almost surely, 2^994300140221 is an apocalyptic number.

It is an amenable number.

994300140221 is a deficient number, since it is larger than the sum of its proper divisors (2910751).

994300140221 is a wasteful number, since it uses less digits than its factorization.

994300140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910750.

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

The spelling of 994300140221 in words is "nine hundred ninety-four billion, three hundred million, one hundred forty thousand, two hundred twenty-one".