121253221054133 has 24 divisors (see below), whose sum is σ = 149347760803992. Its totient is φ = 97817032664064.

The previous prime is 121253221054129. The next prime is 121253221054177. The reversal of 121253221054133 is 331450122352121.

It can be written as a sum of positive squares in 4 ways, for example, as 100386432605809 + 20866788448324 = 10019303^2 + 4568018^2 .

It is not a de Polignac number, because 121253221054133 - 2² = 121253221054129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121253221054093 and 121253221054102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121253221054193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140494235 + ... + 141354647.

It is an arithmetic number, because the mean of its divisors is an integer number (6222823366833).

Almost surely, 2^{121253221054133} is an apocalyptic number.

It is an amenable number.

121253221054133 is a deficient number, since it is larger than the sum of its proper divisors (28094539749859).

121253221054133 is a wasteful number, since it uses less digits than its factorization.

121253221054133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029621 (or 1029614 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 121253221054133 in words is "one hundred twenty-one trillion, two hundred fifty-three billion, two hundred twenty-one million, fifty-four thousand, one hundred thirty-three".