20121002133 has 8 divisors (see below), whose sum is σ = 26829420288. Its totient is φ = 13413292704.

The previous prime is 20121002131. The next prime is 20121002149. The reversal of 20121002133 is 33120012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20121002133 - 2¹ = 20121002131 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121002131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106960 + ... + 227337.

It is an arithmetic number, because the mean of its divisors is an integer number (3353677536).

Almost surely, 2^20121002133 is an apocalyptic number.

It is an amenable number.

20121002133 is a deficient number, since it is larger than the sum of its proper divisors (6708418155).

20121002133 is a wasteful number, since it uses less digits than its factorization.

20121002133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354363.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20121002133 its reverse (33120012102), we get a palindrome (53241014235).

The spelling of 20121002133 in words is "twenty billion, one hundred twenty-one million, two thousand, one hundred thirty-three".