11221210012931 has 2 divisors, whose sum is σ = 11221210012932. Its totient is φ = 11221210012930.

The previous prime is 11221210012913. The next prime is 11221210012949. The reversal of 11221210012931 is 13921001212211.

Together with previous prime (11221210012913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (11221210012913) and next prime (11221210012949).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11221210012931 is a prime.

It is a super-2 number, since 2×11221210012931² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11221210012931.

It is not a weakly prime, because it can be changed into another prime (11221210012031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610605006465 + 5610605006466.

It is an arithmetic number, because the mean of its divisors is an integer number (5610605006466).

Almost surely, 2^{11221210012931} is an apocalyptic number.

11221210012931 is a deficient number, since it is larger than the sum of its proper divisors (1).

11221210012931 is an equidigital number, since it uses as much as digits as its factorization.

11221210012931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 11221210012931 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, twelve thousand, nine hundred thirty-one".