222950683721 has 2 divisors, whose sum is σ = 222950683722. Its totient is φ = 222950683720.

The previous prime is 222950683601. The next prime is 222950683727. The reversal of 222950683721 is 127386059222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159376608400 + 63574075321 = 399220^2 + 252139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222950683721 is a prime.

It is a super-2 number, since 2×222950683721² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222950683727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111475341860 + 111475341861.

It is an arithmetic number, because the mean of its divisors is an integer number (111475341861).

Almost surely, 2^222950683721 is an apocalyptic number.

It is an amenable number.

222950683721 is a deficient number, since it is larger than the sum of its proper divisors (1).

222950683721 is an equidigital number, since it uses as much as digits as its factorization.

222950683721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 222950683721 in words is "two hundred twenty-two billion, nine hundred fifty million, six hundred eighty-three thousand, seven hundred twenty-one".