11231101321221 has 8 divisors (see below), whose sum is σ = 15185714462784. Its totient is φ = 7381944530240.

The previous prime is 11231101321201. The next prime is 11231101321273. The reversal of 11231101321221 is 12212310113211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231101321221 - 2¹⁴ = 11231101304837 is a prime.

It is a super-2 number, since 2×11231101321221² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231101321201) 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, 26364087396 + ... + 26364087821.

It is an arithmetic number, because the mean of its divisors is an integer number (1898214307848).

Almost surely, 2^{11231101321221} is an apocalyptic number.

It is an amenable number.

11231101321221 is a deficient number, since it is larger than the sum of its proper divisors (3954613141563).

11231101321221 is an equidigital number, since it uses as much as digits as its factorization.

11231101321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52728175291.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11231101321221 its reverse (12212310113211), we get a palindrome (23443411434432).

The spelling of 11231101321221 in words is "eleven trillion, two hundred thirty-one billion, one hundred one million, three hundred twenty-one thousand, two hundred twenty-one".