221301211101231 has 8 divisors (see below), whose sum is σ = 304586613128704. Its totient is φ = 142774974903960.

The previous prime is 221301211101181. The next prime is 221301211101233. The reversal of 221301211101231 is 132101112103122.

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

It is not a de Polignac number, because 221301211101231 - 2¹⁴ = 221301211084847 is a prime.

It is a super-2 number, since 2×221301211101231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221301211101198 and 221301211101207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221301211101233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189791457441 + ... + 1189791457626.

It is an arithmetic number, because the mean of its divisors is an integer number (38073326641088).

Almost surely, 2^{221301211101231} is an apocalyptic number.

221301211101231 is a deficient number, since it is larger than the sum of its proper divisors (83285402027473).

221301211101231 is a wasteful number, since it uses less digits than its factorization.

221301211101231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379582915101.

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

Adding to 221301211101231 its reverse (132101112103122), we get a palindrome (353402323204353).

The spelling of 221301211101231 in words is "two hundred twenty-one trillion, three hundred one billion, two hundred eleven million, one hundred one thousand, two hundred thirty-one".