21322020111 has 32 divisors (see below), whose sum is σ = 33406334976. Its totient is φ = 11842848000.

The previous prime is 21322020107. The next prime is 21322020113. The reversal of 21322020111 is 11102022312.

It is not a de Polignac number, because 21322020111 - 2² = 21322020107 is a prime.

It is a super-2 number, since 2×21322020111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322020113) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 187641 + ... + 279021.

It is an arithmetic number, because the mean of its divisors is an integer number (1043947968).

Almost surely, 2^21322020111 is an apocalyptic number.

21322020111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21322020111 is a deficient number, since it is larger than the sum of its proper divisors (12084314865).

21322020111 is a wasteful number, since it uses less digits than its factorization.

21322020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91703.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21322020111 its reverse (11102022312), we get a palindrome (32424042423).

The spelling of 21322020111 in words is "twenty-one billion, three hundred twenty-two million, twenty thousand, one hundred eleven".