212303121131 has 2 divisors, whose sum is σ = 212303121132. Its totient is φ = 212303121130.

The previous prime is 212303121127. The next prime is 212303121193. The reversal of 212303121131 is 131121303212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212303121131 - 2² = 212303121127 is a prime.

It is a super-2 number, since 2×212303121131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212303126131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151560565 + 106151560566.

It is an arithmetic number, because the mean of its divisors is an integer number (106151560566).

Almost surely, 2^212303121131 is an apocalyptic number.

212303121131 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303121131 is an equidigital number, since it uses as much as digits as its factorization.

212303121131 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 212303121131 its reverse (131121303212), we get a palindrome (343424424343).

The spelling of 212303121131 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand, one hundred thirty-one".