121202312133 has 16 divisors (see below), whose sum is σ = 185026895360. Its totient is φ = 69131842416.

The previous prime is 121202312087. The next prime is 121202312137. The reversal of 121202312133 is 331213202121.

It is a de Polignac number, because none of the positive numbers 2^k-121202312133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202312137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5264143 + ... + 5287116.

It is an arithmetic number, because the mean of its divisors is an integer number (11564180960).

Almost surely, 2^121202312133 is an apocalyptic number.

It is an amenable number.

121202312133 is a deficient number, since it is larger than the sum of its proper divisors (63824583227).

121202312133 is a wasteful number, since it uses less digits than its factorization.

121202312133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551816.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121202312133 its reverse (331213202121), we get a palindrome (452415514254).

The spelling of 121202312133 in words is "one hundred twenty-one billion, two hundred two million, three hundred twelve thousand, one hundred thirty-three".