222221121202001 has 4 divisors (see below), whose sum is σ = 222297302597172. Its totient is φ = 222144939806832.

The previous prime is 222221121201941. The next prime is 222221121202111. The reversal of 222221121202001 is 100202121122222.

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 109646050382401 + 112575070819600 = 10471201^2 + 10610140^2 .

It is a cyclic number.

It is not a de Polignac number, because 222221121202001 - 2¹⁴ = 222221121185617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221121202601) 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, 38090693210 + ... + 38090699043.

It is an arithmetic number, because the mean of its divisors is an integer number (55574325649293).

Almost surely, 2^{222221121202001} is an apocalyptic number.

It is an amenable number.

222221121202001 is a deficient number, since it is larger than the sum of its proper divisors (76181395171).

222221121202001 is an equidigital number, since it uses as much as digits as its factorization.

222221121202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76181395170.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222221121202001 its reverse (100202121122222), we get a palindrome (322423242324223).

The spelling of 222221121202001 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, one".