2221230142 has 4 divisors (see below), whose sum is σ = 3331845216. Its totient is φ = 1110615070.

The previous prime is 2221230119. The next prime is 2221230157. The reversal of 2221230142 is 2410321222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2410321222 = 2 ⋅1205160611.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555307534 + ... + 555307537.

It is an arithmetic number, because the mean of its divisors is an integer number (832961304).

Almost surely, 2^2221230142 is an apocalyptic number.

2221230142 is a deficient number, since it is larger than the sum of its proper divisors (1110615074).

2221230142 is a wasteful number, since it uses less digits than its factorization.

2221230142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110615073.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2221230142 is about 47129.9283046346. The cubic root of 2221230142 is about 1304.7616583462.

Adding to 2221230142 its reverse (2410321222), we get a palindrome (4631551364).

The spelling of 2221230142 in words is "two billion, two hundred twenty-one million, two hundred thirty thousand, one hundred forty-two".