2221601010516 has 48 divisors (see below), whose sum is σ = 5775400449280. Its totient is φ = 738515854080.

The previous prime is 2221601010457. The next prime is 2221601010527. The reversal of 2221601010516 is 6150101061222.

2221601010516 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 601 + 0 + 1 + 0 + 51 + 6 = 666.

It is a super-2 number, since 2×2221601010516² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 2221601010516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27985405 + ... + 28064676.

Almost surely, 2^{2221601010516} is an apocalyptic number.

It is an amenable number.

2221601010516 is an abundant number, since it is smaller than the sum of its proper divisors (3553799438764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221601010516 is a wasteful number, since it uses less digits than its factorization.

2221601010516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56050461 (or 56050453 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 2221601010516 its reverse (6150101061222), we get a palindrome (8371702071738).

The spelling of 2221601010516 in words is "two trillion, two hundred twenty-one billion, six hundred one million, ten thousand, five hundred sixteen".