15042410221 has 4 divisors (see below), whose sum is σ = 15045599872. Its totient is φ = 15039220572.

The previous prime is 15042410191. The next prime is 15042410239. The reversal of 15042410221 is 12201424051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15042410221 - 2²¹ = 15040313069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15042410192 and 15042410201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042410291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587741 + ... + 1597186.

It is an arithmetic number, because the mean of its divisors is an integer number (3761399968).

Almost surely, 2^15042410221 is an apocalyptic number.

It is an amenable number.

15042410221 is a deficient number, since it is larger than the sum of its proper divisors (3189651).

15042410221 is an equidigital number, since it uses as much as digits as its factorization.

15042410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189650.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 15042410221 its reverse (12201424051), we get a palindrome (27243834272).

The spelling of 15042410221 in words is "fifteen billion, forty-two million, four hundred ten thousand, two hundred twenty-one".