1021106564 has 24 divisors (see below), whose sum is σ = 1909746720. Its totient is φ = 476026496.

The previous prime is 1021106563. The next prime is 1021106641. The reversal of 1021106564 is 4656011201.

It is not an unprimeable number, because it can be changed into a prime (1021106561) 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, 62894 + ... + 77445.

It is an arithmetic number, because the mean of its divisors is an integer number (79572780).

Almost surely, 2^1021106564 is an apocalyptic number.

It is an amenable number.

1021106564 is a deficient number, since it is larger than the sum of its proper divisors (888640156).

1021106564 is a wasteful number, since it uses less digits than its factorization.

1021106564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140467 (or 140465 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 1021106564 is about 31954.7580807616. The cubic root of 1021106564 is about 1006.9865951439.

Adding to 1021106564 its reverse (4656011201), we get a palindrome (5677117765).

The spelling of 1021106564 in words is "one billion, twenty-one million, one hundred six thousand, five hundred sixty-four".