2166202506226 has 32 divisors (see below), whose sum is σ = 3700615621248. Its totient is φ = 941367968640.

The previous prime is 2166202506191. The next prime is 2166202506239. The reversal of 2166202506226 is 6226052026612.

It is a happy 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, 3811 + ... + 2081446.

It is an arithmetic number, because the mean of its divisors is an integer number (115644238164).

Almost surely, 2^{2166202506226} is an apocalyptic number.

2166202506226 is a deficient number, since it is larger than the sum of its proper divisors (1534413115022).

2166202506226 is a wasteful number, since it uses less digits than its factorization.

2166202506226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087346.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 2166202506226 in words is "two trillion, one hundred sixty-six billion, two hundred two million, five hundred six thousand, two hundred twenty-six".