221211221033131 has 8 divisors (see below), whose sum is σ = 266118762145280. Its totient is φ = 179630164447848.

The previous prime is 221211221033081. The next prime is 221211221033167. The reversal of 221211221033131 is 131330122112122.

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 221211221033131 - 2⁷ = 221211221033003 is a prime.

It is a super-2 number, since 2×221211221033131² (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 = 221211221033096 and 221211221033105.

It is not an unprimeable number, because it can be changed into a prime (221211221033171) 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, 831621131571 + ... + 831621131836.

It is an arithmetic number, because the mean of its divisors is an integer number (33264845268160).

Almost surely, 2^{221211221033131} is an apocalyptic number.

221211221033131 is a deficient number, since it is larger than the sum of its proper divisors (44907541112149).

221211221033131 is a wasteful number, since it uses less digits than its factorization.

221211221033131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663242263433.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 221211221033131 its reverse (131330122112122), we get a palindrome (352541343145253).

The spelling of 221211221033131 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred twenty-one million, thirty-three thousand, one hundred thirty-one".