212020022111 has 4 divisors (see below), whose sum is σ = 213689471232. Its totient is φ = 210350572992.

The previous prime is 212020022107. The next prime is 212020022117. The reversal of 212020022111 is 111220020212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212020022111 - 2² = 212020022107 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 (212020022117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 834724370 + ... + 834724623.

It is an arithmetic number, because the mean of its divisors is an integer number (53422367808).

Almost surely, 2^212020022111 is an apocalyptic number.

212020022111 is a deficient number, since it is larger than the sum of its proper divisors (1669449121).

212020022111 is a wasteful number, since it uses less digits than its factorization.

212020022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669449120.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212020022111 its reverse (111220020212), we get a palindrome (323240042323).

The spelling of 212020022111 in words is "two hundred twelve billion, twenty million, twenty-two thousand, one hundred eleven".