121002133123 has 2 divisors, whose sum is σ = 121002133124. Its totient is φ = 121002133122.

The previous prime is 121002133111. The next prime is 121002133141. The reversal of 121002133123 is 321331200121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121002133123 - 2²¹ = 121000035971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121002133123.

It is not a weakly prime, because it can be changed into another prime (121002133193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501066561 + 60501066562.

It is an arithmetic number, because the mean of its divisors is an integer number (60501066562).

Almost surely, 2^121002133123 is an apocalyptic number.

121002133123 is a deficient number, since it is larger than the sum of its proper divisors (1).

121002133123 is an equidigital number, since it uses as much as digits as its factorization.

121002133123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 121002133123 its reverse (321331200121), we get a palindrome (442333333244).

The spelling of 121002133123 in words is "one hundred twenty-one billion, two million, one hundred thirty-three thousand, one hundred twenty-three".