222121202 has 4 divisors (see below), whose sum is σ = 333181806. Its totient is φ = 111060600.

The previous prime is 222121199. The next prime is 222121217. The reversal of 222121202 is 202121222.

222121202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 202121222 = 2 ⋅101060611.

It can be written as a sum of positive squares in only one way, i.e., 180660481 + 41460721 = 13441^2 + 6439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530299 + ... + 55530302.

Almost surely, 2^222121202 is an apocalyptic number.

222121202 is a deficient number, since it is larger than the sum of its proper divisors (111060604).

222121202 is a wasteful number, since it uses less digits than its factorization.

222121202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111060603.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 222121202 is about 14903.7311435761. The cubic root of 222121202 is about 605.6150674029.

Adding to 222121202 its reverse (202121222), we get a palindrome (424242424).

The spelling of 222121202 in words is "two hundred twenty-two million, one hundred twenty-one thousand, two hundred two".