1021111323 has 8 divisors (see below), whose sum is σ = 1362144336. Its totient is φ = 680409600.

The previous prime is 1021111283. The next prime is 1021111327. The reversal of 1021111323 is 3231111201.

It is a happy number.

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

It is not a de Polignac number, because 1021111323 - 2¹³ = 1021103131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021111327) 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, 75538 + ... + 88023.

It is an arithmetic number, because the mean of its divisors is an integer number (170268042).

Almost surely, 2^1021111323 is an apocalyptic number.

1021111323 is a deficient number, since it is larger than the sum of its proper divisors (341033013).

1021111323 is a wasteful number, since it uses less digits than its factorization.

1021111323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165645.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1021111323 is about 31954.8325453287. The cubic root of 1021111323 is about 1006.9881595388.

Adding to 1021111323 its reverse (3231111201), we get a palindrome (4252222524).

The spelling of 1021111323 in words is "one billion, twenty-one million, one hundred eleven thousand, three hundred twenty-three".