20213133011 has 4 divisors (see below), whose sum is σ = 20291783592. Its totient is φ = 20134482432.

The previous prime is 20213132999. The next prime is 20213133037. The reversal of 20213133011 is 11033131202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11033131202 = 2 ⋅5516565601.

It is a cyclic number.

It is not a de Polignac number, because 20213133011 - 2²⁶ = 20146024147 is a prime.

It is a super-2 number, since 2×20213133011² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20213133091) 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, 39324905 + ... + 39325418.

It is an arithmetic number, because the mean of its divisors is an integer number (5072945898).

Almost surely, 2^20213133011 is an apocalyptic number.

20213133011 is a deficient number, since it is larger than the sum of its proper divisors (78650581).

20213133011 is an equidigital number, since it uses as much as digits as its factorization.

20213133011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78650580.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20213133011 its reverse (11033131202), we get a palindrome (31246264213).

The spelling of 20213133011 in words is "twenty billion, two hundred thirteen million, one hundred thirty-three thousand, eleven".