1021110345 has 24 divisors (see below), whose sum is σ = 1799928000. Its totient is φ = 535360416.

The previous prime is 1021110341. The next prime is 1021110347. The reversal of 1021110345 is 5430111201.

It is not a de Polignac number, because 1021110345 - 2² = 1021110341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021110341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189645 + ... + 194954.

It is an arithmetic number, because the mean of its divisors is an integer number (74997000).

Almost surely, 2^1021110345 is an apocalyptic number.

1021110345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1021110345 is a deficient number, since it is larger than the sum of its proper divisors (778817655).

1021110345 is a wasteful number, since it uses less digits than its factorization.

1021110345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384669 (or 384666 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1021110345 is about 31954.8172424754. The cubic root of 1021110345 is about 1006.9878380477.

Adding to 1021110345 its reverse (5430111201), we get a palindrome (6451221546).

The spelling of 1021110345 in words is "one billion, twenty-one million, one hundred ten thousand, three hundred forty-five".