10415212921 has 2 divisors, whose sum is σ = 10415212922. Its totient is φ = 10415212920.

The previous prime is 10415212849. The next prime is 10415212931. The reversal of 10415212921 is 12921251401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7355463696 + 3059749225 = 85764^2 + 55315^2 .

It is a cyclic number.

It is not a de Polignac number, because 10415212921 - 2¹³ = 10415204729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10415212921.

It is not a weakly prime, because it can be changed into another prime (10415212931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5207606460 + 5207606461.

It is an arithmetic number, because the mean of its divisors is an integer number (5207606461).

Almost surely, 2^10415212921 is an apocalyptic number.

It is an amenable number.

10415212921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10415212921 is an equidigital number, since it uses as much as digits as its factorization.

10415212921 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 10415212921 in words is "ten billion, four hundred fifteen million, two hundred twelve thousand, nine hundred twenty-one".