1021220242 has 16 divisors (see below), whose sum is σ = 1751504832. Its totient is φ = 437455440.

The previous prime is 1021220143. The next prime is 1021220257. The reversal of 1021220242 is 2420221201.

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 7 ways as a sum of consecutive naturals, for example, 14673 + ... + 47515.

It is an arithmetic number, because the mean of its divisors is an integer number (109469052).

Almost surely, 2^1021220242 is an apocalyptic number.

1021220242 is a deficient number, since it is larger than the sum of its proper divisors (730284590).

1021220242 is a wasteful number, since it uses less digits than its factorization.

1021220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35073.

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

The square root of 1021220242 is about 31956.5367647998. The cubic root of 1021220242 is about 1007.0239624401.

Adding to 1021220242 its reverse (2420221201), we get a palindrome (3441441443).

The spelling of 1021220242 in words is "one billion, twenty-one million, two hundred twenty thousand, two hundred forty-two".