222211898 has 8 divisors (see below), whose sum is σ = 338782260. Its totient is φ = 109284480.

The previous prime is 222211807. The next prime is 222211903. The reversal of 222211898 is 898112222.

It can be written as a sum of positive squares in 2 ways, for example, as 170903329 + 51308569 = 13073^2 + 7163^2 .

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

It is a super-2 number, since 2×222211898² = 98756255225524808, which contains 22 as substring.

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, 910583 + ... + 910826.

Almost surely, 2^222211898 is an apocalyptic number.

222211898 is a deficient number, since it is larger than the sum of its proper divisors (116570362).

222211898 is a wasteful number, since it uses less digits than its factorization.

222211898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821472.

The product of its digits is 9216, while the sum is 35.

The square root of 222211898 is about 14906.7735610359. The cubic root of 222211898 is about 605.6974839537.

It can be divided in two parts, 2222 and 11898, that multiplied together give a triangular number (26437356 = T₇₂₇₁).

The spelling of 222211898 in words is "two hundred twenty-two million, two hundred eleven thousand, eight hundred ninety-eight".