222971001993 has 32 divisors (see below), whose sum is σ = 344725889280. Its totient is φ = 142169385600.

The previous prime is 222971001959. The next prime is 222971002021. The reversal of 222971001993 is 399100179222.

It is not a de Polignac number, because 222971001993 - 2¹⁰ = 222971000969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222971001943) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11250693 + ... + 11270493.

It is an arithmetic number, because the mean of its divisors is an integer number (10772684040).

Almost surely, 2^222971001993 is an apocalyptic number.

222971001993 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

222971001993 is a deficient number, since it is larger than the sum of its proper divisors (121754887287).

222971001993 is a wasteful number, since it uses less digits than its factorization.

222971001993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37966 (or 37960 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 222971001993 in words is "two hundred twenty-two billion, nine hundred seventy-one million, one thousand, nine hundred ninety-three".