22121515135241 has 2 divisors, whose sum is σ = 22121515135242. Its totient is φ = 22121515135240.

The previous prime is 22121515135091. The next prime is 22121515135253. The reversal of 22121515135241 is 14253151512122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16913717291641 + 5207797843600 = 4112629^2 + 2282060^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121515135241 is a prime.

It is a super-2 number, since 2×22121515135241² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22121545135241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060757567620 + 11060757567621.

It is an arithmetic number, because the mean of its divisors is an integer number (11060757567621).

Almost surely, 2^{22121515135241} is an apocalyptic number.

It is an amenable number.

22121515135241 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121515135241 is an equidigital number, since it uses as much as digits as its factorization.

22121515135241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 35.

Adding to 22121515135241 its reverse (14253151512122), we get a palindrome (36374666647363).

The spelling of 22121515135241 in words is "twenty-two trillion, one hundred twenty-one billion, five hundred fifteen million, one hundred thirty-five thousand, two hundred forty-one".