212013123331 has 2 divisors, whose sum is σ = 212013123332.
Its totient is φ = 212013123330.
The previous prime is 212013123319. The next prime is 212013123367. The reversal of 212013123331 is 133321310212.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-212013123331 is a prime.
It is a super-2 number, since 2×2120131233312 (a number of 23 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (212013123731) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006561665 + 106006561666.
It is an arithmetic number, because the mean of its divisors is an integer number (106006561666).
Almost surely, 2212013123331 is an apocalyptic number.
212013123331 is a deficient number, since it is larger than the sum of its proper divisors (1).
212013123331 is an equidigital number, since it uses as much as digits as its factorization.
212013123331 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 648, while the sum is 22.
Adding to 212013123331 its reverse (133321310212), we get a palindrome (345334433543).
The spelling of 212013123331 in words is "two hundred twelve billion, thirteen million, one hundred twenty-three thousand, three hundred thirty-one".