121121010210023 has 2 divisors, whose sum is σ = 121121010210024. Its totient is φ = 121121010210022.

The previous prime is 121121010210017. The next prime is 121121010210139. The reversal of 121121010210023 is 320012010121121.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (320012010121121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121121010210023 - 2¹⁴ = 121121010193639 is a prime.

It is a super-2 number, since 2×121121010210023² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 121121010209983 and 121121010210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121010210323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560505105011 + 60560505105012.

It is an arithmetic number, because the mean of its divisors is an integer number (60560505105012).

Almost surely, 2^{121121010210023} is an apocalyptic number.

121121010210023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121010210023 is an equidigital number, since it uses as much as digits as its factorization.

121121010210023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121121010210023 its reverse (320012010121121), we get a palindrome (441133020331144).

The spelling of 121121010210023 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, ten million, two hundred ten thousand, twenty-three".