133210012121 has 4 divisors (see below), whose sum is σ = 133211937552. Its totient is φ = 133208086692.

The previous prime is 133210012099. The next prime is 133210012153. The reversal of 133210012121 is 121210012331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133210012121 - 2²² = 133205817817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 133210012121.

It is not an unprimeable number, because it can be changed into a prime (133210012171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854915 + ... + 998648.

It is an arithmetic number, because the mean of its divisors is an integer number (33302984388).

Almost surely, 2^133210012121 is an apocalyptic number.

It is an amenable number.

133210012121 is a deficient number, since it is larger than the sum of its proper divisors (1925431).

133210012121 is an equidigital number, since it uses as much as digits as its factorization.

133210012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925430.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 133210012121 its reverse (121210012331), we get a palindrome (254420024452).

The spelling of 133210012121 in words is "one hundred thirty-three billion, two hundred ten million, twelve thousand, one hundred twenty-one".