221122302001 has 4 divisors (see below), whose sum is σ = 221125505904. Its totient is φ = 221119098100.

The previous prime is 221122301989. The next prime is 221122302007. The reversal of 221122302001 is 100203221122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 100203221122 = 2 ⋅50101610561.

It is a cyclic number.

It is not a de Polignac number, because 221122302001 - 2²¹ = 221120204849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221122302007) 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, 1496095 + ... + 1637236.

It is an arithmetic number, because the mean of its divisors is an integer number (55281376476).

Almost surely, 2^221122302001 is an apocalyptic number.

It is an amenable number.

221122302001 is a deficient number, since it is larger than the sum of its proper divisors (3203903).

221122302001 is an equidigital number, since it uses as much as digits as its factorization.

221122302001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203902.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221122302001 its reverse (100203221122), we get a palindrome (321325523123).

The spelling of 221122302001 in words is "two hundred twenty-one billion, one hundred twenty-two million, three hundred two thousand, one".