20001212000122 has 4 divisors (see below), whose sum is σ = 30001818000186. Its totient is φ = 10000606000060.

The previous prime is 20001212000101. The next prime is 20001212000179. The reversal of 20001212000122 is 22100021210002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10187772365241 + 9813439634881 = 3191829^2 + 3132641^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000303000029 + ... + 5000303000032.

Almost surely, 2^{20001212000122} is an apocalyptic number.

20001212000122 is a deficient number, since it is larger than the sum of its proper divisors (10000606000064).

20001212000122 is a wasteful number, since it uses less digits than its factorization.

20001212000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000606000063.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20001212000122 its reverse (22100021210002), we get a palindrome (42101233210124).

The spelling of 20001212000122 in words is "twenty trillion, one billion, two hundred twelve million, one hundred twenty-two", and thus it is an aban number.