20002122121212 has 72 divisors (see below), whose sum is σ = 63036990936192. Its totient is φ = 5195356394400.

The previous prime is 20002122121207. The next prime is 20002122121237. The reversal of 20002122121212 is 21212122120002.

It is a happy number.

20002122121212 is a `hidden beast` number, since 200 + 0 + 21 + 221 + 212 + 12 = 666.

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

It is a congruent number.

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, 3607883614 + ... + 3607889157.

Almost surely, 2^{20002122121212} is an apocalyptic number.

20002122121212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20002122121212 is an abundant number, since it is smaller than the sum of its proper divisors (43034868814980).

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

20002122121212 is a wasteful number, since it uses less digits than its factorization.

20002122121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215772799 (or 7215772794 counting only the distinct ones).

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

Adding to 20002122121212 its reverse (21212122120002), we get a palindrome (41214244241214).

The spelling of 20002122121212 in words is "twenty trillion, two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".