20331001222 has 32 divisors (see below), whose sum is σ = 35461730304. Its totient is φ = 8561440800.

The previous prime is 20331001189. The next prime is 20331001231. The reversal of 20331001222 is 22210013302.

It is a super-2 number, since 2×20331001222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20331001196 and 20331001205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 834303 + ... + 858325.

It is an arithmetic number, because the mean of its divisors is an integer number (1108179072).

Almost surely, 2^20331001222 is an apocalyptic number.

20331001222 is a deficient number, since it is larger than the sum of its proper divisors (15130729082).

20331001222 is a wasteful number, since it uses less digits than its factorization.

20331001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25084.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20331001222 its reverse (22210013302), we get a palindrome (42541014524).

The spelling of 20331001222 in words is "twenty billion, three hundred thirty-one million, one thousand, two hundred twenty-two".