121342252133 has 4 divisors (see below), whose sum is σ = 121368515628. Its totient is φ = 121315988640.

The previous prime is 121342252127. The next prime is 121342252201. The reversal of 121342252133 is 331252243121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331252243121 = 71 ⋅4665524551.

It can be written as a sum of positive squares in 2 ways, for example, as 52195342369 + 69146909764 = 228463^2 + 262958^2 .

It is a cyclic number.

It is not a de Polignac number, because 121342252133 - 2⁶ = 121342252069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121342252096 and 121342252105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121342252103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13124816 + ... + 13134057.

It is an arithmetic number, because the mean of its divisors is an integer number (30342128907).

Almost surely, 2^121342252133 is an apocalyptic number.

It is an amenable number.

121342252133 is a deficient number, since it is larger than the sum of its proper divisors (26263495).

121342252133 is an equidigital number, since it uses as much as digits as its factorization.

121342252133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26263494.

The product of its digits is 8640, while the sum is 29.

Adding to 121342252133 its reverse (331252243121), we get a palindrome (452594495254).

The spelling of 121342252133 in words is "one hundred twenty-one billion, three hundred forty-two million, two hundred fifty-two thousand, one hundred thirty-three".