Search a number
BaseRepresentation
bin1001101001010100100101…
…01110101011111111101011
32210002202022202211202002112
410310222102232223333223
510240010122104020021
6113040111545552535
74316305415034503
oct464522256537753
983082282752075
1021211010220011
1168385a2332407
122466a044a574b
13bab260963b11
14534892b56a03
1526bb3147dd5b
hex134a92babfeb

21211010220011 has 2 divisors, whose sum is σ = 21211010220012. Its totient is φ = 21211010220010.

The previous prime is 21211010219969. The next prime is 21211010220013. The reversal of 21211010220011 is 11002201011212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21211010220011 - 218 = 21211009957867 is a prime.

It is a super-2 number, since 2×212110102200112 (a number of 27 digits) contains 22 as substring.

Together with 21211010220013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21211010220013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605505110005 + 10605505110006.

It is an arithmetic number, because the mean of its divisors is an integer number (10605505110006).

Almost surely, 221211010220011 is an apocalyptic number.

21211010220011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211010220011 is an equidigital number, since it uses as much as digits as its factorization.

21211010220011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211010220011 its reverse (11002201011212), we get a palindrome (32213211231223).

The spelling of 21211010220011 in words is "twenty-one trillion, two hundred eleven billion, ten million, two hundred twenty thousand, eleven".