222100021201001 has 4 divisors (see below), whose sum is σ = 224299031312004. Its totient is φ = 219901011090000.

The previous prime is 222100021200991. The next prime is 222100021201057. The reversal of 222100021201001 is 100102120001222.

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 202608891105625 + 19491130095376 = 14234075^2 + 4414876^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100021201001 - 2¹⁰ = 222100021199977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222100021201801) 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, 1099505055350 + ... + 1099505055551.

It is an arithmetic number, because the mean of its divisors is an integer number (56074757828001).

Almost surely, 2^{222100021201001} is an apocalyptic number.

It is an amenable number.

222100021201001 is a deficient number, since it is larger than the sum of its proper divisors (2199010111003).

222100021201001 is a wasteful number, since it uses less digits than its factorization.

222100021201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199010111002.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222100021201001 its reverse (100102120001222), we get a palindrome (322202141202223).

The spelling of 222100021201001 in words is "two hundred twenty-two trillion, one hundred billion, twenty-one million, two hundred one thousand, one".