221111010012131 has 2 divisors, whose sum is σ = 221111010012132. Its totient is φ = 221111010012130.

The previous prime is 221111010012119. The next prime is 221111010012149. The reversal of 221111010012131 is 131210010111122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221111010012131 - 2⁴⁶ = 150742265834467 is a prime.

It is a super-2 number, since 2×221111010012131² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221111010012161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110555505006065 + 110555505006066.

It is an arithmetic number, because the mean of its divisors is an integer number (110555505006066).

Almost surely, 2^{221111010012131} is an apocalyptic number.

221111010012131 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111010012131 is an equidigital number, since it uses as much as digits as its factorization.

221111010012131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 221111010012131 its reverse (131210010111122), we get a palindrome (352321020123253).

The spelling of 221111010012131 in words is "two hundred twenty-one trillion, one hundred eleven billion, ten million, twelve thousand, one hundred thirty-one".