221101222121023 has 2 divisors, whose sum is σ = 221101222121024. Its totient is φ = 221101222121022.

The previous prime is 221101222120969. The next prime is 221101222121027. The reversal of 221101222121023 is 320121222101122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221101222121023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221101222120985 and 221101222121003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221101222121027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550611060511 + 110550611060512.

It is an arithmetic number, because the mean of its divisors is an integer number (110550611060512).

Almost surely, 2^{221101222121023} is an apocalyptic number.

221101222121023 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101222121023 is an equidigital number, since it uses as much as digits as its factorization.

221101222121023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 221101222121023 its reverse (320121222101122), we get a palindrome (541222444222145).

The spelling of 221101222121023 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-three".