201998222 has 4 divisors (see below), whose sum is σ = 302997336. Its totient is φ = 100999110.

The previous prime is 201998221. The next prime is 201998231. The reversal of 201998222 is 222899102.

201998222 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×201998222² = 81606563382322568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201998221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50499554 + ... + 50499557.

It is an arithmetic number, because the mean of its divisors is an integer number (75749334).

Almost surely, 2^201998222 is an apocalyptic number.

201998222 is a deficient number, since it is larger than the sum of its proper divisors (100999114).

201998222 is a wasteful number, since it uses less digits than its factorization.

201998222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100999113.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 201998222 is about 14212.6078535925. The cubic root of 201998222 is about 586.7447093291.

The spelling of 201998222 in words is "two hundred one million, nine hundred ninety-eight thousand, two hundred twenty-two".