20122220012 has 12 divisors (see below), whose sum is σ = 35290942680. Its totient is φ = 10039093536.

The previous prime is 20122220011. The next prime is 20122220021. The reversal of 20122220012 is 21002222102.

It is a super-2 number, since 2×20122220012² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20122220011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5502062 + ... + 5505717.

It is an arithmetic number, because the mean of its divisors is an integer number (2940911890).

Almost surely, 2^20122220012 is an apocalyptic number.

It is an amenable number.

20122220012 is a deficient number, since it is larger than the sum of its proper divisors (15168722668).

20122220012 is a wasteful number, since it uses less digits than its factorization.

20122220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11008240 (or 11008238 counting only the distinct ones).

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

Adding to 20122220012 its reverse (21002222102), we get a palindrome (41124442114).

The spelling of 20122220012 in words is "twenty billion, one hundred twenty-two million, two hundred twenty thousand, twelve".