1021242111 has 8 divisors (see below), whose sum is σ = 1361836080. Its totient is φ = 680738112.

The previous prime is 1021242097. The next prime is 1021242119. The reversal of 1021242111 is 1112421201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021242111 - 2¹⁰ = 1021241087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021242119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11211 + ... + 46563.

It is an arithmetic number, because the mean of its divisors is an integer number (170229510).

Almost surely, 2^1021242111 is an apocalyptic number.

1021242111 is a deficient number, since it is larger than the sum of its proper divisors (340593969).

1021242111 is an equidigital number, since it uses as much as digits as its factorization.

1021242111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44985.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1021242111 is about 31956.8789308343. The cubic root of 1021242111 is about 1007.0311507197.

Adding to 1021242111 its reverse (1112421201), we get a palindrome (2133663312).

The spelling of 1021242111 in words is "one billion, twenty-one million, two hundred forty-two thousand, one hundred eleven".