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222123021013 = 1981931120741
BaseRepresentation
bin1100111011011110010…
…0000101001011010101
3210020100010122121002001
43032313210011023111
512114401443133023
6250013015115301
722022262345355
oct3166744051325
9706303577061
10222123021013
1186224722343
1237070672b31
1317c3b7b515a
14aa72326b65
155ba07a36ad
hex33b79052d5

222123021013 has 4 divisors (see below), whose sum is σ = 222124339948. Its totient is φ = 222121702080.

The previous prime is 222123021007. The next prime is 222123021017. The reversal of 222123021013 is 310120321222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30245731569 + 191877289444 = 173913^2 + 438038^2 .

It is a cyclic number.

It is not a de Polignac number, because 222123021013 - 217 = 222122889941 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 (222123021017) 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, 362178 + ... + 758563.

It is an arithmetic number, because the mean of its divisors is an integer number (55531084987).

Almost surely, 2222123021013 is an apocalyptic number.

It is an amenable number.

222123021013 is a deficient number, since it is larger than the sum of its proper divisors (1318935).

222123021013 is a wasteful number, since it uses less digits than its factorization.

222123021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318934.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222123021013 its reverse (310120321222), we get a palindrome (532243342235).

The spelling of 222123021013 in words is "two hundred twenty-two billion, one hundred twenty-three million, twenty-one thousand, thirteen".

Divisors: 1 198193 1120741 222123021013