13221101000 has 32 divisors (see below), whose sum is σ = 30937378680. Its totient is φ = 5288440000.

The previous prime is 13221100993. The next prime is 13221101053. The reversal of 13221101000 is 10112231.

It can be written as a sum of positive squares in 4 ways, for example, as 529276036 + 12691824964 = 23006^2 + 112658^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6609551 + ... + 6611550.

Almost surely, 2^13221101000 is an apocalyptic number.

13221101000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13221101000 is an abundant number, since it is smaller than the sum of its proper divisors (17716277680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13221101000 is a wasteful number, since it uses less digits than its factorization.

13221101000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13221122 (or 13221108 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 13221101000 its reverse (10112231), we get a palindrome (13231213231).

The spelling of 13221101000 in words is "thirteen billion, two hundred twenty-one million, one hundred one thousand".