121121213231267 has 2 divisors, whose sum is σ = 121121213231268. Its totient is φ = 121121213231266.

The previous prime is 121121213231159. The next prime is 121121213231287. The reversal of 121121213231267 is 762132312121121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121121213231267 - 2¹⁸ = 121121212969123 is a prime.

It is a super-2 number, since 2×121121213231267² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121121213231287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560606615633 + 60560606615634.

It is an arithmetic number, because the mean of its divisors is an integer number (60560606615634).

Almost surely, 2^{121121213231267} is an apocalyptic number.

121121213231267 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121213231267 is an equidigital number, since it uses as much as digits as its factorization.

121121213231267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

Adding to 121121213231267 its reverse (762132312121121), we get a palindrome (883253525352388).

The spelling of 121121213231267 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred thirteen million, two hundred thirty-one thousand, two hundred sixty-seven".