21430210120015 has 8 divisors (see below), whose sum is σ = 27228972858480. Its totient is φ = 16135687619712.

The previous prime is 21430210119977. The next prime is 21430210120021. The reversal of 21430210120015 is 51002101203412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21430210120015 - 2⁷ = 21430210119887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126060059445 + ... + 126060059614.

It is an arithmetic number, because the mean of its divisors is an integer number (3403621607310).

Almost surely, 2^{21430210120015} is an apocalyptic number.

21430210120015 is a deficient number, since it is larger than the sum of its proper divisors (5798762738465).

21430210120015 is a wasteful number, since it uses less digits than its factorization.

21430210120015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252120119081.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21430210120015 its reverse (51002101203412), we get a palindrome (72432311323427).

The spelling of 21430210120015 in words is "twenty-one trillion, four hundred thirty billion, two hundred ten million, one hundred twenty thousand, fifteen".