103112032120021 has 2 divisors, whose sum is σ = 103112032120022. Its totient is φ = 103112032120020.

The previous prime is 103112032119959. The next prime is 103112032120051. The reversal of 103112032120021 is 120021230211301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60982261464996 + 42129770655025 = 7809114^2 + 6490745^2 .

It is a cyclic number.

It is not a de Polignac number, because 103112032120021 - 2¹⁹ = 103112031595733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103112032120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51556016060010 + 51556016060011.

It is an arithmetic number, because the mean of its divisors is an integer number (51556016060011).

Almost surely, 2^{103112032120021} is an apocalyptic number.

It is an amenable number.

103112032120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

103112032120021 is an equidigital number, since it uses as much as digits as its factorization.

103112032120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 103112032120021 its reverse (120021230211301), we get a palindrome (223133262331322).

The spelling of 103112032120021 in words is "one hundred three trillion, one hundred twelve billion, thirty-two million, one hundred twenty thousand, twenty-one".