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21013122020133 = 37004374006711
BaseRepresentation
bin1001100011100011111111…
…01011000111001100100101
32202101211112121021121202110
410301301333223013030211
510223234333214121013
6112405143415031233
74266101516062245
oct461617753071445
982354477247673
1021013122020133
116771684629971
12243459806b519
13b956b5004819
1452907d313b25
152668ed6032c3
hex131c7fac7325

21013122020133 has 4 divisors (see below), whose sum is σ = 28017496026848. Its totient is φ = 14008748013420.

The previous prime is 21013122020131. The next prime is 21013122020147. The reversal of 21013122020133 is 33102022131012.

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 not a de Polignac number, because 21013122020133 - 21 = 21013122020131 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21013122020131) 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, 3502187003353 + ... + 3502187003358.

It is an arithmetic number, because the mean of its divisors is an integer number (7004374006712).

Almost surely, 221013122020133 is an apocalyptic number.

It is an amenable number.

21013122020133 is a deficient number, since it is larger than the sum of its proper divisors (7004374006715).

21013122020133 is an equidigital number, since it uses as much as digits as its factorization.

21013122020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7004374006714.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21013122020133 its reverse (33102022131012), we get a palindrome (54115144151145).

The spelling of 21013122020133 in words is "twenty-one trillion, thirteen billion, one hundred twenty-two million, twenty thousand, one hundred thirty-three".

Divisors: 1 3 7004374006711 21013122020133