12021021222122 has 32 divisors (see below), whose sum is σ = 20557935336960. Its totient is φ = 5218402471920.

The previous prime is 12021021222121. The next prime is 12021021222193. The reversal of 12021021222122 is 22122212012021.

It is a junction number, because it is equal to n+sod(n) for n = 12021021222094 and 12021021222103.

It is not an unprimeable number, because it can be changed into a prime (12021021222121) 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, 18148172 + ... + 18798887.

It is an arithmetic number, because the mean of its divisors is an integer number (642435479280).

Almost surely, 2^{12021021222122} is an apocalyptic number.

12021021222122 is a deficient number, since it is larger than the sum of its proper divisors (8536914114838).

12021021222122 is a wasteful number, since it uses less digits than its factorization.

12021021222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36947738.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12021021222122 its reverse (22122212012021), we get a palindrome (34143233234143).

The spelling of 12021021222122 in words is "twelve trillion, twenty-one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".