20300505212 has 12 divisors (see below), whose sum is σ = 38258644536. Its totient is φ = 9369463920.

The previous prime is 20300505161. The next prime is 20300505233. The reversal of 20300505212 is 21250500302.

It is a super-2 number, since 2×20300505212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195197114 + ... + 195197217.

It is an arithmetic number, because the mean of its divisors is an integer number (3188220378).

Almost surely, 2^20300505212 is an apocalyptic number.

It is an amenable number.

20300505212 is a deficient number, since it is larger than the sum of its proper divisors (17958139324).

20300505212 is a wasteful number, since it uses less digits than its factorization.

20300505212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390394348 (or 390394346 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The spelling of 20300505212 in words is "twenty billion, three hundred million, five hundred five thousand, two hundred twelve".