11231221013000 has 32 divisors (see below), whose sum is σ = 26281057172760. Its totient is φ = 4492488404800.

The previous prime is 11231221012969. The next prime is 11231221013017. The reversal of 11231221013000 is 31012213211.

It can be written as a sum of positive squares in 4 ways, for example, as 7179688096036 + 4051532916964 = 2679494^2 + 2012842^2 .

It is a super-2 number, since 2×11231221013000² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11231221013000.

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, 5615609507 + ... + 5615611506.

Almost surely, 2^{11231221013000} is an apocalyptic number.

11231221013000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231221013000 is an abundant number, since it is smaller than the sum of its proper divisors (15049836159760).

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

11231221013000 is a wasteful number, since it uses less digits than its factorization.

11231221013000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11231221034 (or 11231221020 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11231221013000 its reverse (31012213211), we get a palindrome (11262233226211).

The spelling of 11231221013000 in words is "eleven trillion, two hundred thirty-one billion, two hundred twenty-one million, thirteen thousand".