103012221329981 has 2 divisors, whose sum is σ = 103012221329982. Its totient is φ = 103012221329980.

The previous prime is 103012221329977. The next prime is 103012221330017. The reversal of 103012221329981 is 189923122210301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80589060533881 + 22423160796100 = 8977141^2 + 4735310^2 .

It is a cyclic number.

It is not a de Polignac number, because 103012221329981 - 2² = 103012221329977 is a prime.

It is a super-2 number, since 2×103012221329981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103012221329921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51506110664990 + 51506110664991.

It is an arithmetic number, because the mean of its divisors is an integer number (51506110664991).

Almost surely, 2^{103012221329981} is an apocalyptic number.

It is an amenable number.

103012221329981 is a deficient number, since it is larger than the sum of its proper divisors (1).

103012221329981 is an equidigital number, since it uses as much as digits as its factorization.

103012221329981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 103012221329981 in words is "one hundred three trillion, twelve billion, two hundred twenty-one million, three hundred twenty-nine thousand, nine hundred eighty-one".