222043642001 has 4 divisors (see below), whose sum is σ = 224242094004. Its totient is φ = 219845190000.

The previous prime is 222043641979. The next prime is 222043642013. The reversal of 222043642001 is 100246340222.

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 183870297601 + 38173344400 = 428801^2 + 195380^2 .

It is a cyclic number.

It is not a de Polignac number, because 222043642001 - 2²² = 222039447697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222043642031) 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, 1099225850 + ... + 1099226051.

It is an arithmetic number, because the mean of its divisors is an integer number (56060523501).

Almost surely, 2^222043642001 is an apocalyptic number.

It is an amenable number.

222043642001 is a deficient number, since it is larger than the sum of its proper divisors (2198452003).

222043642001 is a wasteful number, since it uses less digits than its factorization.

222043642001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198452002.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 222043642001 its reverse (100246340222), we get a palindrome (322289982223).

The spelling of 222043642001 in words is "two hundred twenty-two billion, forty-three million, six hundred forty-two thousand, one".