133021002121 has 6 divisors (see below), whose sum is σ = 154738716810. Its totient is φ = 114018001776.

The previous prime is 133021002119. The next prime is 133021002131. The reversal of 133021002121 is 121200120331.

It can be written as a sum of positive squares in only one way, i.e., 69421710400 + 63599291721 = 263480^2 + 252189^2 .

It is not a de Polignac number, because 133021002121 - 2¹ = 133021002119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133021002095 and 133021002104.

It is not an unprimeable number, because it can be changed into a prime (133021002131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1357357116 + ... + 1357357213.

It is an arithmetic number, because the mean of its divisors is an integer number (25789786135).

Almost surely, 2^133021002121 is an apocalyptic number.

It is an amenable number.

133021002121 is a deficient number, since it is larger than the sum of its proper divisors (21717714689).

133021002121 is an equidigital number, since it uses as much as digits as its factorization.

133021002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2714714343 (or 2714714336 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 133021002121 its reverse (121200120331), we get a palindrome (254221122452).

The spelling of 133021002121 in words is "one hundred thirty-three billion, twenty-one million, two thousand, one hundred twenty-one".