2221706866900 has 36 divisors (see below), whose sum is σ = 4838139665632. Its totient is φ = 885542513760.

The previous prime is 2221706866837. The next prime is 2221706866913. The reversal of 2221706866900 is 96686071222.

It is a super-2 number, since 2×2221706866900² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39224472 + ... + 39281071.

Almost surely, 2^{2221706866900} is an apocalyptic number.

2221706866900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221706866900 is an abundant number, since it is smaller than the sum of its proper divisors (2616432798732).

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

2221706866900 is a wasteful number, since it uses less digits than its factorization.

2221706866900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78505840 (or 78505833 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 2221706866900 in words is "two trillion, two hundred twenty-one billion, seven hundred six million, eight hundred sixty-six thousand, nine hundred".