20130233121211 has 4 divisors (see below), whose sum is σ = 20175066603000. Its totient is φ = 20085399639424.

The previous prime is 20130233121203. The next prime is 20130233121247. The reversal of 20130233121211 is 11212133203102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20130233121211 - 2³ = 20130233121203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130233121311) 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, 22416740221 + ... + 22416741118.

It is an arithmetic number, because the mean of its divisors is an integer number (5043766650750).

Almost surely, 2^{20130233121211} is an apocalyptic number.

20130233121211 is a deficient number, since it is larger than the sum of its proper divisors (44833481789).

20130233121211 is an equidigital number, since it uses as much as digits as its factorization.

20130233121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44833481788.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20130233121211 its reverse (11212133203102), we get a palindrome (31342366324313).

The spelling of 20130233121211 in words is "twenty trillion, one hundred thirty billion, two hundred thirty-three million, one hundred twenty-one thousand, two hundred eleven".