42210021215 has 8 divisors (see below), whose sum is σ = 50729597568. Its totient is φ = 33716302240.

The previous prime is 42210021173. The next prime is 42210021229. The reversal of 42210021215 is 51212001224.

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

It is not a de Polignac number, because 42210021215 - 2¹² = 42210017119 is a prime.

It is a Duffinian number.

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, 6460751 + ... + 6467280.

It is an arithmetic number, because the mean of its divisors is an integer number (6341199696).

Almost surely, 2^42210021215 is an apocalyptic number.

42210021215 is a deficient number, since it is larger than the sum of its proper divisors (8519576353).

42210021215 is a wasteful number, since it uses less digits than its factorization.

42210021215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928689.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 42210021215 its reverse (51212001224), we get a palindrome (93422022439).

The spelling of 42210021215 in words is "forty-two billion, two hundred ten million, twenty-one thousand, two hundred fifteen".