20212133011 has 4 divisors (see below), whose sum is σ = 23099580592. Its totient is φ = 17324685432.

The previous prime is 20212132999. The next prime is 20212133027. The reversal of 20212133011 is 11033121202.

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 20212133011 - 2¹³ = 20212124819 is a prime.

It is a super-2 number, since 2×20212133011² (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 (20212133041) 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, 1443723780 + ... + 1443723793.

It is an arithmetic number, because the mean of its divisors is an integer number (5774895148).

Almost surely, 2^20212133011 is an apocalyptic number.

20212133011 is a deficient number, since it is larger than the sum of its proper divisors (2887447581).

20212133011 is an equidigital number, since it uses as much as digits as its factorization.

20212133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887447580.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20212133011 its reverse (11033121202), we get a palindrome (31245254213).

The spelling of 20212133011 in words is "twenty billion, two hundred twelve million, one hundred thirty-three thousand, eleven".