212020111 has 2 divisors, whose sum is σ = 212020112. Its totient is φ = 212020110.

The previous prime is 212020103. The next prime is 212020139. The reversal of 212020111 is 111020212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212020111 - 2³ = 212020103 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010055 + 106010056.

It is an arithmetic number, because the mean of its divisors is an integer number (106010056).

Almost surely, 2^212020111 is an apocalyptic number.

212020111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020111 is an equidigital number, since it uses as much as digits as its factorization.

212020111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 212020111 is about 14560.9103767587. The cubic root of 212020111 is about 596.2920499742.

Adding to 212020111 its reverse (111020212), we get a palindrome (323040323).

It can be divided in two parts, 2120201 and 11, that added together give a palindrome (2120212).

The spelling of 212020111 in words is "two hundred twelve million, twenty thousand, one hundred eleven".