215221240633 has 24 divisors (see below), whose sum is σ = 257331072768. Its totient is φ = 179376827616.

The previous prime is 215221240603. The next prime is 215221240649. The reversal of 215221240633 is 336042122512.

It is not a de Polignac number, because 215221240633 - 2²¹ = 215219143481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215221240595 and 215221240604.

It is not an unprimeable number, because it can be changed into a prime (215221240603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 240835 + ... + 698887.

It is an arithmetic number, because the mean of its divisors is an integer number (10722128032).

Almost surely, 2^215221240633 is an apocalyptic number.

It is an amenable number.

215221240633 is a deficient number, since it is larger than the sum of its proper divisors (42109832135).

215221240633 is a wasteful number, since it uses less digits than its factorization.

215221240633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458333 (or 458326 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The spelling of 215221240633 in words is "two hundred fifteen billion, two hundred twenty-one million, two hundred forty thousand, six hundred thirty-three".