121123203353 has 2 divisors, whose sum is σ = 121123203354. Its totient is φ = 121123203352.

The previous prime is 121123203281. The next prime is 121123203361. The reversal of 121123203353 is 353302321121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 94290142489 + 26833060864 = 307067^2 + 163808^2 .

It is a cyclic number.

It is not a de Polignac number, because 121123203353 - 2¹² = 121123199257 is a prime.

It is not a weakly prime, because it can be changed into another prime (121123203373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561601676 + 60561601677.

It is an arithmetic number, because the mean of its divisors is an integer number (60561601677).

Almost surely, 2^121123203353 is an apocalyptic number.

It is an amenable number.

121123203353 is a deficient number, since it is larger than the sum of its proper divisors (1).

121123203353 is an equidigital number, since it uses as much as digits as its factorization.

121123203353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 121123203353 its reverse (353302321121), we get a palindrome (474425524474).

The spelling of 121123203353 in words is "one hundred twenty-one billion, one hundred twenty-three million, two hundred three thousand, three hundred fifty-three".