1220202242 has 16 divisors (see below), whose sum is σ = 2118255360. Its totient is φ = 516323808.

The previous prime is 1220202209. The next prime is 1220202259. The reversal of 1220202242 is 2422020221.

It is a super-2 number, since 2×1220202242² = 2977787022763653128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220202242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550523 + ... + 552734.

It is an arithmetic number, because the mean of its divisors is an integer number (132390960).

Almost surely, 2^1220202242 is an apocalyptic number.

1220202242 is a deficient number, since it is larger than the sum of its proper divisors (898053118).

1220202242 is a wasteful number, since it uses less digits than its factorization.

1220202242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103345.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1220202242 is about 34931.3933589830. The cubic root of 1220202242 is about 1068.5887710367.

Adding to 1220202242 its reverse (2422020221), we get a palindrome (3642222463).

The spelling of 1220202242 in words is "one billion, two hundred twenty million, two hundred two thousand, two hundred forty-two".