222002122010021 has 4 divisors (see below), whose sum is σ = 222011319619692. Its totient is φ = 221992924400352.

The previous prime is 222002122009973. The next prime is 222002122010059. The reversal of 222002122010021 is 120010221200222.

It is a happy number.

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 179367895408900 + 42634226601121 = 13392830^2 + 6529489^2 .

It is a cyclic number.

It is not a de Polignac number, because 222002122010021 - 2¹⁴ = 222002121993637 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 (222002122015021) 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, 4598768630 + ... + 4598816903.

It is an arithmetic number, because the mean of its divisors is an integer number (55502829904923).

Almost surely, 2^{222002122010021} is an apocalyptic number.

It is an amenable number.

222002122010021 is a deficient number, since it is larger than the sum of its proper divisors (9197609671).

222002122010021 is an equidigital number, since it uses as much as digits as its factorization.

222002122010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9197609670.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222002122010021 its reverse (120010221200222), we get a palindrome (342012343210243).

The spelling of 222002122010021 in words is "two hundred twenty-two trillion, two billion, one hundred twenty-two million, ten thousand, twenty-one".