21022010001211 has 4 divisors (see below), whose sum is σ = 21025366547472. Its totient is φ = 21018653454952.

The previous prime is 21022010001203. The next prime is 21022010001227. The reversal of 21022010001211 is 11210001022012.

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 21022010001211 - 2³ = 21022010001203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022010001191 and 21022010001200.

It is not an unprimeable number, because it can be changed into a prime (21022010001511) 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, 1678263736 + ... + 1678276261.

It is an arithmetic number, because the mean of its divisors is an integer number (5256341636868).

Almost surely, 2^{21022010001211} is an apocalyptic number.

21022010001211 is a deficient number, since it is larger than the sum of its proper divisors (3356546261).

21022010001211 is an equidigital number, since it uses as much as digits as its factorization.

21022010001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3356546260.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21022010001211 its reverse (11210001022012), we get a palindrome (32232011023223).

The spelling of 21022010001211 in words is "twenty-one trillion, twenty-two billion, ten million, one thousand, two hundred eleven".