221422021311131 has 4 divisors (see below), whose sum is σ = 226571370643992. Its totient is φ = 216272671978272.

The previous prime is 221422021311103. The next prime is 221422021311149. The reversal of 221422021311131 is 131113120224122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221422021311131 is a prime.

It is a super-2 number, since 2×221422021311131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221422021311131.

It is not an unprimeable number, because it can be changed into a prime (221422021311181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574674666366 + ... + 2574674666451.

It is an arithmetic number, because the mean of its divisors is an integer number (56642842660998).

Almost surely, 2^{221422021311131} is an apocalyptic number.

221422021311131 is a deficient number, since it is larger than the sum of its proper divisors (5149349332861).

221422021311131 is an equidigital number, since it uses as much as digits as its factorization.

221422021311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149349332860.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 221422021311131 its reverse (131113120224122), we get a palindrome (352535141535253).

The spelling of 221422021311131 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, twenty-one million, three hundred eleven thousand, one hundred thirty-one".