212020011 has 30 divisors (see below), whose sum is σ = 368437740. Its totient is φ = 121152024.

The previous prime is 212020009. The next prime is 212020013. The reversal of 212020011 is 110020212.

212020011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (212020009) and next prime (212020013).

It is not a de Polignac number, because 212020011 - 2¹ = 212020009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 212019975 and 212020002.

It is not an unprimeable number, because it can be changed into a prime (212020013) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 22741 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (12281258).

Almost surely, 2^212020011 is an apocalyptic number.

212020011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

212020011 is a deficient number, since it is larger than the sum of its proper divisors (156417729).

212020011 is an equidigital number, since it uses as much as digits as its factorization.

212020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53445 (or 53429 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 212020011 is about 14560.9069429071. The cubic root of 212020011 is about 596.2919562264.

Adding to 212020011 its reverse (110020212), we get a palindrome (322040223).

The spelling of 212020011 in words is "two hundred twelve million, twenty thousand, eleven".