212013231113 has 2 divisors, whose sum is σ = 212013231114. Its totient is φ = 212013231112.

The previous prime is 212013231103. The next prime is 212013231127. The reversal of 212013231113 is 311132310212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211368223504 + 645007609 = 459748^2 + 25397^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013231113 - 2¹² = 212013227017 is a prime.

It is a super-2 number, since 2×212013231113² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212013231103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006615556 + 106006615557.

It is an arithmetic number, because the mean of its divisors is an integer number (106006615557).

Almost surely, 2^212013231113 is an apocalyptic number.

It is an amenable number.

212013231113 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013231113 is an equidigital number, since it uses as much as digits as its factorization.

212013231113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 212013231113 its reverse (311132310212), we get a palindrome (523145541325).

The spelling of 212013231113 in words is "two hundred twelve billion, thirteen million, two hundred thirty-one thousand, one hundred thirteen".