121023123010343 has 2 divisors, whose sum is σ = 121023123010344. Its totient is φ = 121023123010342.

The previous prime is 121023123010319. The next prime is 121023123010369. The reversal of 121023123010343 is 343010321320121.

It is a happy number.

It is an a-pointer prime, because the next prime (121023123010369) can be obtained adding 121023123010343 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121023123010343 is a prime.

It is a super-2 number, since 2×121023123010343² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121023123010843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511561505171 + 60511561505172.

It is an arithmetic number, because the mean of its divisors is an integer number (60511561505172).

Almost surely, 2^{121023123010343} is an apocalyptic number.

121023123010343 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023123010343 is an equidigital number, since it uses as much as digits as its factorization.

121023123010343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 121023123010343 its reverse (343010321320121), we get a palindrome (464033444330464).

The spelling of 121023123010343 in words is "one hundred twenty-one trillion, twenty-three billion, one hundred twenty-three million, ten thousand, three hundred forty-three".