221012130331 has 2 divisors, whose sum is σ = 221012130332. Its totient is φ = 221012130330.

The previous prime is 221012130319. The next prime is 221012130341. The reversal of 221012130331 is 133031210122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221012130331 - 2¹⁹ = 221011606043 is a prime.

It is a super-2 number, since 2×221012130331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221012130299 and 221012130308.

It is not a weakly prime, because it can be changed into another prime (221012130301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506065165 + 110506065166.

It is an arithmetic number, because the mean of its divisors is an integer number (110506065166).

Almost surely, 2^221012130331 is an apocalyptic number.

221012130331 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012130331 is an equidigital number, since it uses as much as digits as its factorization.

221012130331 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 19.

Adding to 221012130331 its reverse (133031210122), we get a palindrome (354043340453).

The spelling of 221012130331 in words is "two hundred twenty-one billion, twelve million, one hundred thirty thousand, three hundred thirty-one".