222121230949 has 2 divisors, whose sum is σ = 222121230950. Its totient is φ = 222121230948.

The previous prime is 222121230943. The next prime is 222121230979. The reversal of 222121230949 is 949032121222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213841504900 + 8279726049 = 462430^2 + 90993^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121230949 - 2¹⁷ = 222121099877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121230943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060615474 + 111060615475.

It is an arithmetic number, because the mean of its divisors is an integer number (111060615475).

Almost surely, 2^222121230949 is an apocalyptic number.

It is an amenable number.

222121230949 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121230949 is an equidigital number, since it uses as much as digits as its factorization.

222121230949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 222121230949 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred thirty thousand, nine hundred forty-nine".