1222012402 has 32 divisors (see below), whose sum is σ = 2081181312. Its totient is φ = 533896704.

The previous prime is 1222012391. The next prime is 1222012427. The reversal of 1222012402 is 2042102221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47473 + ... + 68539.

It is an arithmetic number, because the mean of its divisors is an integer number (65036916).

Almost surely, 2^1222012402 is an apocalyptic number.

1222012402 is a deficient number, since it is larger than the sum of its proper divisors (859168910).

1222012402 is a wasteful number, since it uses less digits than its factorization.

1222012402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21202.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1222012402 is about 34957.2939742195. The cubic root of 1222012402 is about 1069.1169241730.

Adding to 1222012402 its reverse (2042102221), we get a palindrome (3264114623).

The spelling of 1222012402 in words is "one billion, two hundred twenty-two million, twelve thousand, four hundred two".