222142999961 has 2 divisors, whose sum is σ = 222142999962. Its totient is φ = 222142999960.

The previous prime is 222142999891. The next prime is 222143000029. The reversal of 222142999961 is 169999241222.

222142999961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186641280400 + 35501719561 = 432020^2 + 188419^2 .

It is a cyclic number.

It is not a de Polignac number, because 222142999961 - 2²⁶ = 222075891097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222142999897 and 222142999906.

It is not a weakly prime, because it can be changed into another prime (222142999861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111071499980 + 111071499981.

It is an arithmetic number, because the mean of its divisors is an integer number (111071499981).

Almost surely, 2^222142999961 is an apocalyptic number.

It is an amenable number.

222142999961 is a deficient number, since it is larger than the sum of its proper divisors (1).

222142999961 is an equidigital number, since it uses as much as digits as its factorization.

222142999961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 56.

The spelling of 222142999961 in words is "two hundred twenty-two billion, one hundred forty-two million, nine hundred ninety-nine thousand, nine hundred sixty-one".