213020220111 has 16 divisors (see below), whose sum is σ = 304854083424. Its totient is φ = 131828788224.

The previous prime is 213020220103. The next prime is 213020220151. The reversal of 213020220111 is 111022020312.

It is not a de Polignac number, because 213020220111 - 2³ = 213020220103 is a prime.

It is a super-2 number, since 2×213020220111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020220151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28604956 + ... + 28612401.

It is an arithmetic number, because the mean of its divisors is an integer number (19053380214).

Almost surely, 2^213020220111 is an apocalyptic number.

213020220111 is a deficient number, since it is larger than the sum of its proper divisors (91833863313).

213020220111 is a wasteful number, since it uses less digits than its factorization.

213020220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57217450.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 213020220111 its reverse (111022020312), we get a palindrome (324042240423).

The spelling of 213020220111 in words is "two hundred thirteen billion, twenty million, two hundred twenty thousand, one hundred eleven".