212020001111 has 4 divisors (see below), whose sum is σ = 213545325000. Its totient is φ = 210494677224.

The previous prime is 212020001071. The next prime is 212020001131. The reversal of 212020001111 is 111100020212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020001111 is a prime.

It is a super-2 number, since 2×212020001111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212020001092 and 212020001101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212020001131) 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, 762661736 + ... + 762662013.

It is an arithmetic number, because the mean of its divisors is an integer number (53386331250).

Almost surely, 2^212020001111 is an apocalyptic number.

212020001111 is a deficient number, since it is larger than the sum of its proper divisors (1525323889).

212020001111 is a wasteful number, since it uses less digits than its factorization.

212020001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525323888.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 212020001111 its reverse (111100020212), we get a palindrome (323120021323).

The spelling of 212020001111 in words is "two hundred twelve billion, twenty million, one thousand, one hundred eleven".