1021221119 has 8 divisors (see below), whose sum is σ = 1041390000. Its totient is φ = 1001085696.

The previous prime is 1021221077. The next prime is 1021221133. The reversal of 1021221119 is 9111221201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021221119 is a prime.

It is a super-2 number, since 2×1021221119² = 2085785147783224322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021221119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021220119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58484 + ... + 73910.

It is an arithmetic number, because the mean of its divisors is an integer number (130173750).

Almost surely, 2^1021221119 is an apocalyptic number.

1021221119 is a deficient number, since it is larger than the sum of its proper divisors (20168881).

1021221119 is a wasteful number, since it uses less digits than its factorization.

1021221119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16729.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 1021221119 is about 31956.5504865591. The cubic root of 1021221119 is about 1007.0242507096.

It can be divided in two parts, 102 and 1221119, that added together give a palindrome (1221221).

The spelling of 1021221119 in words is "one billion, twenty-one million, two hundred twenty-one thousand, one hundred nineteen".