30121355023 has 2 divisors, whose sum is σ = 30121355024. Its totient is φ = 30121355022.

The previous prime is 30121354979. The next prime is 30121355051. The reversal of 30121355023 is 32055312103.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30121355023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30121355083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060677511 + 15060677512.

It is an arithmetic number, because the mean of its divisors is an integer number (15060677512).

Almost surely, 2^30121355023 is an apocalyptic number.

30121355023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30121355023 is an equidigital number, since it uses as much as digits as its factorization.

30121355023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 30121355023 its reverse (32055312103), we get a palindrome (62176667126).

The spelling of 30121355023 in words is "thirty billion, one hundred twenty-one million, three hundred fifty-five thousand, twenty-three".