21022120101011 has 8 divisors (see below), whose sum is σ = 21511241207280. Its totient is φ = 20533009658112.

The previous prime is 21022120100999. The next prime is 21022120101053. The reversal of 21022120101011 is 11010102122012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21022120101011 - 2¹⁴ = 21022120084627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022120106011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393991 + ... + 6632303.

It is an arithmetic number, because the mean of its divisors is an integer number (2688905150910).

Almost surely, 2^{21022120101011} is an apocalyptic number.

21022120101011 is a deficient number, since it is larger than the sum of its proper divisors (489121106269).

21022120101011 is an equidigital number, since it uses as much as digits as its factorization.

21022120101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5331685.

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

Adding to 21022120101011 its reverse (11010102122012), we get a palindrome (32032222223023).

The spelling of 21022120101011 in words is "twenty-one trillion, twenty-two billion, one hundred twenty million, one hundred one thousand, eleven".