221858222002 has 8 divisors (see below), whose sum is σ = 332791062300. Its totient is φ = 110927867904.

The previous prime is 221858221969. The next prime is 221858222039. The reversal of 221858222002 is 200222858122.

It can be written as a sum of positive squares in 2 ways, for example, as 202634122201 + 19224099801 = 450149^2 + 138651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379627 + ... + 766702.

Almost surely, 2^221858222002 is an apocalyptic number.

221858222002 is a deficient number, since it is larger than the sum of its proper divisors (110932840298).

221858222002 is a wasteful number, since it uses less digits than its factorization.

221858222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243100.

The product of its (nonzero) digits is 20480, while the sum is 34.

The spelling of 221858222002 in words is "two hundred twenty-one billion, eight hundred fifty-eight million, two hundred twenty-two thousand, two".