20212420111 has 12 divisors (see below), whose sum is σ = 21896891352. Its totient is φ = 18649034976.

The previous prime is 20212420103. The next prime is 20212420133. The reversal of 20212420111 is 11102421202.

It is not a de Polignac number, because 20212420111 - 2³ = 20212420103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212420141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356745 + ... + 409501.

It is an arithmetic number, because the mean of its divisors is an integer number (1824740946).

Almost surely, 2^20212420111 is an apocalyptic number.

20212420111 is a deficient number, since it is larger than the sum of its proper divisors (1684471241).

20212420111 is a wasteful number, since it uses less digits than its factorization.

20212420111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55050 (or 55037 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20212420111 its reverse (11102421202), we get a palindrome (31314841313).

The spelling of 20212420111 in words is "twenty billion, two hundred twelve million, four hundred twenty thousand, one hundred eleven".