20001212200122 has 64 divisors (see below), whose sum is σ = 42524681097600. Its totient is φ = 6259593150720.

The previous prime is 20001212200121. The next prime is 20001212200127. The reversal of 20001212200122 is 22100221210002.

It is not an unprimeable number, because it can be changed into a prime (20001212200121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10316329 + ... + 12100787.

It is an arithmetic number, because the mean of its divisors is an integer number (664448142150).

Almost surely, 2^{20001212200122} is an apocalyptic number.

20001212200122 is an abundant number, since it is smaller than the sum of its proper divisors (22523468897478).

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

20001212200122 is a wasteful number, since it uses less digits than its factorization.

20001212200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786271.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20001212200122 its reverse (22100221210002), we get a palindrome (42101433410124).

The spelling of 20001212200122 in words is "twenty trillion, one billion, two hundred twelve million, two hundred thousand, one hundred twenty-two".