20211011320 has 32 divisors (see below), whose sum is σ = 45519757920. Its totient is φ = 8076407680.

The previous prime is 20211011297. The next prime is 20211011347. The reversal of 20211011320 is 2311011202.

It is a self number, because there is not a number n which added to its sum of digits gives 20211011320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208876 + ... + 289915.

It is an arithmetic number, because the mean of its divisors is an integer number (1422492435).

Almost surely, 2^20211011320 is an apocalyptic number.

20211011320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211011320 is an abundant number, since it is smaller than the sum of its proper divisors (25308746600).

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

20211011320 is a wasteful number, since it uses less digits than its factorization.

20211011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499815 (or 499811 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20211011320 its reverse (2311011202), we get a palindrome (22522022522).

The spelling of 20211011320 in words is "twenty billion, two hundred eleven million, eleven thousand, three hundred twenty".