1011100321 has 12 divisors (see below), whose sum is σ = 1270143616. Its totient is φ = 787869720.

The previous prime is 1011100319. The next prime is 1011100357. The reversal of 1011100321 is 1230011101.

It is not a de Polignac number, because 1011100321 - 2¹ = 1011100319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011100298 and 1011100307.

It is not an unprimeable number, because it can be changed into a prime (1011100361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 596025 + ... + 597718.

Almost surely, 2^1011100321 is an apocalyptic number.

1011100321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1011100321 is a deficient number, since it is larger than the sum of its proper divisors (259043295).

1011100321 is a wasteful number, since it uses less digits than its factorization.

1011100321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193772 (or 1193761 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 1011100321 is about 31797.8037134642. The cubic root of 1011100321 is about 1003.6865000174.

Adding to 1011100321 its reverse (1230011101), we get a palindrome (2241111422).

The spelling of 1011100321 in words is "one billion, eleven million, one hundred thousand, three hundred twenty-one".