2221051643415 has 96 divisors (see below), whose sum is σ = 4405089401856. Its totient is φ = 1025475482880.

The previous prime is 2221051643401. The next prime is 2221051643453. The reversal of 2221051643415 is 5143461501222.

2221051643415 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 0 + 5 + 1 + 643 + 4 + 1 + 5 = 666.

It is not a de Polignac number, because 2221051643415 - 2⁴ = 2221051643399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221051643415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 429297 + ... + 2150906.

It is an arithmetic number, because the mean of its divisors is an integer number (45886347936).

Almost surely, 2^{2221051643415} is an apocalyptic number.

2221051643415 is a deficient number, since it is larger than the sum of its proper divisors (2184037758441).

2221051643415 is a wasteful number, since it uses less digits than its factorization.

2221051643415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2580309 (or 2580306 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 2221051643415 in words is "two trillion, two hundred twenty-one billion, fifty-one million, six hundred forty-three thousand, four hundred fifteen".