220202021002001 has 4 divisors (see below), whose sum is σ = 220216770968100. Its totient is φ = 220187271035904.

The previous prime is 220202021001961. The next prime is 220202021002069. The reversal of 220202021002001 is 100200120202022.

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 202475824360000 + 17726196642001 = 14229400^2 + 4210249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220202021002001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220202021022001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7374960656 + ... + 7374990513.

It is an arithmetic number, because the mean of its divisors is an integer number (55054192742025).

Almost surely, 2^{220202021002001} is an apocalyptic number.

It is an amenable number.

220202021002001 is a deficient number, since it is larger than the sum of its proper divisors (14749966099).

220202021002001 is a wasteful number, since it uses less digits than its factorization.

220202021002001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14749966098.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 220202021002001 its reverse (100200120202022), we get a palindrome (320402141204023).

The spelling of 220202021002001 in words is "two hundred twenty trillion, two hundred two billion, twenty-one million, two thousand, one".