21022002101011 has 24 divisors (see below), whose sum is σ = 22507174838016. Its totient is φ = 19629689439360.

The previous prime is 21022002100991. The next prime is 21022002101053. The reversal of 21022002101011 is 11010120022012.

It is not a de Polignac number, because 21022002101011 - 2³⁹ = 20472246287123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21022002100982 and 21022002101000.

It is not an unprimeable number, because it can be changed into a prime (21022002101911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163751730 + ... + 163880056.

It is an arithmetic number, because the mean of its divisors is an integer number (937798951584).

Almost surely, 2^{21022002101011} is an apocalyptic number.

21022002101011 is a deficient number, since it is larger than the sum of its proper divisors (1485172737005).

21022002101011 is a wasteful number, since it uses less digits than its factorization.

21022002101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132819 (or 132802 counting only the distinct ones).

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

Adding to 21022002101011 its reverse (11010120022012), we get a palindrome (32032122123023).

The spelling of 21022002101011 in words is "twenty-one trillion, twenty-two billion, two million, one hundred one thousand, eleven".