11233132321221 has 10 divisors (see below), whose sum is σ = 16780358158982. Its totient is φ = 7488754880760.

The previous prime is 11233132321181. The next prime is 11233132321261. The reversal of 11233132321221 is 12212323133211.

11233132321221 is a `hidden beast` number, since 1 + 1 + 2 + 3 + 313 + 2 + 321 + 2 + 21 = 666.

It is an interprime number because it is at equal distance from previous prime (11233132321181) and next prime (11233132321261).

It can be written as a sum of positive squares in only one way, i.e., 6491565101025 + 4741567220196 = 2547855^2 + 2177514^2 .

It is not a de Polignac number, because 11233132321221 - 2¹⁸ = 11233132059077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11233132321261) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 69340322890 + ... + 69340323051.

Almost surely, 2^{11233132321221} is an apocalyptic number.

It is an amenable number.

11233132321221 is a deficient number, since it is larger than the sum of its proper divisors (5547225837761).

11233132321221 is an equidigital number, since it uses as much as digits as its factorization.

11233132321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138680645953 (or 138680645944 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

Adding to 11233132321221 its reverse (12212323133211), we get a palindrome (23445455454432).

The spelling of 11233132321221 in words is "eleven trillion, two hundred thirty-three billion, one hundred thirty-two million, three hundred twenty-one thousand, two hundred twenty-one".