1021221332111 has 8 divisors (see below), whose sum is σ = 1025967667200. Its totient is φ = 1016476487352.

The previous prime is 1021221332101. The next prime is 1021221332119. The reversal of 1021221332111 is 1112331221201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021221332111 - 2¹⁰ = 1021221331087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021221332119) 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, 1013006 + ... + 1751748.

It is an arithmetic number, because the mean of its divisors is an integer number (128245958400).

Almost surely, 2^{1021221332111} is an apocalyptic number.

1021221332111 is a deficient number, since it is larger than the sum of its proper divisors (4746335089).

1021221332111 is an equidigital number, since it uses as much as digits as its factorization.

1021221332111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745165.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1021221332111 its reverse (1112331221201), we get a palindrome (2133552553312).

The spelling of 1021221332111 in words is "one trillion, twenty-one billion, two hundred twenty-one million, three hundred thirty-two thousand, one hundred eleven".