20001202112 has 168 divisors, whose sum is σ = 43269590880. Its totient is φ = 9168445440.

The previous prime is 20001202057. The next prime is 20001202127. The reversal of 20001202112 is 21120210002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20001202093 and 20001202102.

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, 145994108 + ... + 145994244.

Almost surely, 2^20001202112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21634795440).

20001202112 is an abundant number, since it is smaller than the sum of its proper divisors (23268388768).

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

20001202112 is a wasteful number, since it uses less digits than its factorization.

20001202112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20001202112 its reverse (21120210002), we get a palindrome (41121412114).

The spelling of 20001202112 in words is "twenty billion, one million, two hundred two thousand, one hundred twelve".