20001222311 has 8 divisors (see below), whose sum is σ = 22860318240. Its totient is φ = 17142571008.

The previous prime is 20001222301. The next prime is 20001222323. The reversal of 20001222311 is 11322210002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001222311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001222301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8426 + ... + 200183.

It is an arithmetic number, because the mean of its divisors is an integer number (2857539780).

Almost surely, 2^20001222311 is an apocalyptic number.

20001222311 is a deficient number, since it is larger than the sum of its proper divisors (2859095929).

20001222311 is a wasteful number, since it uses less digits than its factorization.

20001222311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222313.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20001222311 its reverse (11322210002), we get a palindrome (31323432313).

The spelling of 20001222311 in words is "twenty billion, one million, two hundred twenty-two thousand, three hundred eleven".