20121122212002 has 48 divisors (see below), whose sum is σ = 50317035492672. Its totient is φ = 5691972333600.

The previous prime is 20121122211877. The next prime is 20121122212021. The reversal of 20121122212002 is 20021222112102.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 790538988 + ... + 790564439.

It is an arithmetic number, because the mean of its divisors is an integer number (1048271572764).

Almost surely, 2^{20121122212002} is an apocalyptic number.

20121122212002 is an abundant number, since it is smaller than the sum of its proper divisors (30195913280670).

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

20121122212002 is a wasteful number, since it uses less digits than its factorization.

20121122212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581103543 (or 1581103540 counting only the distinct ones).

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

Adding to 20121122212002 its reverse (20021222112102), we get a palindrome (40142344324104).

The spelling of 20121122212002 in words is "twenty trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, two".