12122220022 has 48 divisors (see below), whose sum is σ = 21110602032. Its totient is φ = 5176442880.

The previous prime is 12122220007. The next prime is 12122220037. The reversal of 12122220022 is 22002222121.

It is an interprime number because it is at equal distance from previous prime (12122220007) and next prime (12122220037).

It is a junction number, because it is equal to n+sod(n) for n = 12122219978 and 12122220005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4277518 + ... + 4280350.

It is an arithmetic number, because the mean of its divisors is an integer number (439804209).

Almost surely, 2^12122220022 is an apocalyptic number.

12122220022 is a deficient number, since it is larger than the sum of its proper divisors (8988382010).

12122220022 is a wasteful number, since it uses less digits than its factorization.

12122220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553 (or 3536 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12122220022 its reverse (22002222121), we get a palindrome (34124442143).

The spelling of 12122220022 in words is "twelve billion, one hundred twenty-two million, two hundred twenty thousand, twenty-two".