12122221021002 has 24 divisors (see below), whose sum is σ = 27237583035936. Its totient is φ = 4040740340172.

The previous prime is 12122221020979. The next prime is 12122221021021. The reversal of 12122221021002 is 20012012222121.

It is a happy number.

12122221021002 is a `hidden beast` number, since 1 + 21 + 222 + 210 + 210 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12471420318 + ... + 12471421289.

It is an arithmetic number, because the mean of its divisors is an integer number (1134899293164).

Almost surely, 2^{12122221021002} is an apocalyptic number.

12122221021002 is an abundant number, since it is smaller than the sum of its proper divisors (15115362014934).

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

12122221021002 is an equidigital number, since it uses as much as digits as its factorization.

12122221021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24942841624 (or 24942841612 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12122221021002 its reverse (20012012222121), we get a palindrome (32134233243123).

The spelling of 12122221021002 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty-one thousand, two".