12122021121222 has 32 divisors (see below), whose sum is σ = 25080446872800. Its totient is φ = 3901277415168.

The previous prime is 12122021121191. The next prime is 12122021121229. The reversal of 12122021121222 is 22212112022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122021121229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10976058 + ... + 12029874.

It is an arithmetic number, because the mean of its divisors is an integer number (783763964775).

Almost surely, 2^{12122021121222} is an apocalyptic number.

12122021121222 is an abundant number, since it is smaller than the sum of its proper divisors (12958425751578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122021121222 is a wasteful number, since it uses less digits than its factorization.

12122021121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119960.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12122021121222 its reverse (22212112022121), we get a palindrome (34334133143343).

The spelling of 12122021121222 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".