21022010011121 has 32 divisors (see below), whose sum is σ = 25254690827520. Its totient is φ = 17119822438656.

The previous prime is 21022010011103. The next prime is 21022010011151. The reversal of 21022010011121 is 12111001022012.

It is a de Polignac number, because none of the positive numbers 2^k-21022010011121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21022010011096 and 21022010011105.

It is not an unprimeable number, because it can be changed into a prime (21022010011151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44188895 + ... + 44662091.

It is an arithmetic number, because the mean of its divisors is an integer number (789209088360).

Almost surely, 2^{21022010011121} is an apocalyptic number.

It is an amenable number.

21022010011121 is a deficient number, since it is larger than the sum of its proper divisors (4232680816399).

21022010011121 is a wasteful number, since it uses less digits than its factorization.

21022010011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477273.

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

Adding to 21022010011121 its reverse (12111001022012), we get a palindrome (33133011033133).

The spelling of 21022010011121 in words is "twenty-one trillion, twenty-two billion, ten million, eleven thousand, one hundred twenty-one".