133121011002 has 64 divisors (see below), whose sum is σ = 322832231424. Its totient is φ = 35724245760.

The previous prime is 133121010983. The next prime is 133121011013. The reversal of 133121011002 is 200110121331.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160713 + ... + 540435.

It is an arithmetic number, because the mean of its divisors is an integer number (5044253616).

Almost surely, 2^133121011002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133121011002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161416115712).

133121011002 is an abundant number, since it is smaller than the sum of its proper divisors (189711220422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133121011002 is a wasteful number, since it uses less digits than its factorization.

133121011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380243.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 133121011002 its reverse (200110121331), we get a palindrome (333231132333).

The spelling of 133121011002 in words is "one hundred thirty-three billion, one hundred twenty-one million, eleven thousand, two".