20001242112 has 44 divisors (see below), whose sum is σ = 53310610536. Its totient is φ = 6667079680.

The previous prime is 20001242099. The next prime is 20001242119. The reversal of 20001242112 is 21124210002.

It is a junction number, because it is equal to n+sod(n) for n = 20001242091 and 20001242100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001242119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3252339 + ... + 3258482.

Almost surely, 2^20001242112 is an apocalyptic number.

It is an amenable number.

20001242112 is an abundant number, since it is smaller than the sum of its proper divisors (33309368424).

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

20001242112 is an equidigital number, since it uses as much as digits as its factorization.

20001242112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510844 (or 6510826 counting only the distinct ones).

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

Adding to 20001242112 its reverse (21124210002), we get a palindrome (41125452114).

The spelling of 20001242112 in words is "twenty billion, one million, two hundred forty-two thousand, one hundred twelve".