213210310311111 has 16 divisors (see below), whose sum is σ = 286364221704288. Its totient is φ = 141101122665600.

The previous prime is 213210310311091. The next prime is 213210310311121. The reversal of 213210310311111 is 111113013012312.

It is not a de Polignac number, because 213210310311111 - 2⁷ = 213210310310983 is a prime.

It is a super-2 number, since 2×213210310311111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213210310311121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352168380 + ... + 352773281.

It is an arithmetic number, because the mean of its divisors is an integer number (17897763856518).

Almost surely, 2^{213210310311111} is an apocalyptic number.

213210310311111 is a deficient number, since it is larger than the sum of its proper divisors (73153911393177).

213210310311111 is a wasteful number, since it uses less digits than its factorization.

213210310311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704942402.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 213210310311111 its reverse (111113013012312), we get a palindrome (324323323323423).

The spelling of 213210310311111 in words is "two hundred thirteen trillion, two hundred ten billion, three hundred ten million, three hundred eleven thousand, one hundred eleven".