20212020111 has 16 divisors (see below), whose sum is σ = 27225285120. Its totient is φ = 13336807200.

The previous prime is 20212020091. The next prime is 20212020113. The reversal of 20212020111 is 11102021202.

It is not a de Polignac number, because 20212020111 - 2⁵ = 20212020079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212020113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069006 + ... + 1087748.

It is an arithmetic number, because the mean of its divisors is an integer number (1701580320).

Almost surely, 2^20212020111 is an apocalyptic number.

20212020111 is a deficient number, since it is larger than the sum of its proper divisors (7013265009).

20212020111 is a wasteful number, since it uses less digits than its factorization.

20212020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20212020111 its reverse (11102021202), we get a palindrome (31314041313).

The spelling of 20212020111 in words is "twenty billion, two hundred twelve million, twenty thousand, one hundred eleven".