222122106649 has 4 divisors (see below), whose sum is σ = 223406049636. Its totient is φ = 220838163664.

The previous prime is 222122106617. The next prime is 222122106659. The reversal of 222122106649 is 946601221222.

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 88069465225 + 134052641424 = 296765^2 + 366132^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122106649 - 2⁵ = 222122106617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122106659) 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, 641971234 + ... + 641971579.

It is an arithmetic number, because the mean of its divisors is an integer number (55851512409).

Almost surely, 2^222122106649 is an apocalyptic number.

It is an amenable number.

222122106649 is a deficient number, since it is larger than the sum of its proper divisors (1283942987).

222122106649 is a wasteful number, since it uses less digits than its factorization.

222122106649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283942986.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 222122106649 in words is "two hundred twenty-two billion, one hundred twenty-two million, one hundred six thousand, six hundred forty-nine".