20001202201212 has 72 divisors (see below), whose sum is σ = 48587320384512. Its totient is φ = 6403465454400.

The previous prime is 20001202201199. The next prime is 20001202201213. The reversal of 20001202201212 is 21210220210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001202201191 and 20001202201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001202201213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3260614 + ... + 7115757.

Almost surely, 2^{20001202201212} is an apocalyptic number.

It is an amenable number.

20001202201212 is an abundant number, since it is smaller than the sum of its proper divisors (28586118183300).

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

20001202201212 is a wasteful number, since it uses less digits than its factorization.

20001202201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376627 (or 10376596 counting only the distinct ones).

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

Adding to 20001202201212 its reverse (21210220210002), we get a palindrome (41211422411214).

The spelling of 20001202201212 in words is "twenty trillion, one billion, two hundred two million, two hundred one thousand, two hundred twelve".