10019541421 has 2 divisors, whose sum is σ = 10019541422. Its totient is φ = 10019541420.

The previous prime is 10019541361. The next prime is 10019541457. The reversal of 10019541421 is 12414591001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5542058025 + 4477483396 = 74445^2 + 66914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10019541421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10019541421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10019545421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5009770710 + 5009770711.

It is an arithmetic number, because the mean of its divisors is an integer number (5009770711).

Almost surely, 2^10019541421 is an apocalyptic number.

It is an amenable number.

10019541421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10019541421 is an equidigital number, since it uses as much as digits as its factorization.

10019541421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 10019541421 in words is "ten billion, nineteen million, five hundred forty-one thousand, four hundred twenty-one".