20020747212 has 96 divisors (see below), whose sum is σ = 53361047040. Its totient is φ = 6486816960.

The previous prime is 20020747157. The next prime is 20020747213. The reversal of 20020747212 is 21274702002.

20020747212 is a `hidden beast` number, since 200 + 207 + 47 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20020747213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5700537 + ... + 5704047.

It is an arithmetic number, because the mean of its divisors is an integer number (555844240).

Almost surely, 2^20020747212 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 20020747212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26680523520).

20020747212 is an abundant number, since it is smaller than the sum of its proper divisors (33340299828).

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

20020747212 is a wasteful number, since it uses less digits than its factorization.

20020747212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988 (or 4980 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The spelling of 20020747212 in words is "twenty billion, twenty million, seven hundred forty-seven thousand, two hundred twelve".