21010022002111 has 24 divisors (see below), whose sum is σ = 22515945762240. Its totient is φ = 19536859431936.

The previous prime is 21010022002103. The next prime is 21010022002153. The reversal of 21010022002111 is 11120022001012.

It is not a de Polignac number, because 21010022002111 - 2³ = 21010022002103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21010022002091 and 21010022002100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010022002511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77958330 + ... + 78227368.

It is an arithmetic number, because the mean of its divisors is an integer number (938164406760).

Almost surely, 2^{21010022002111} is an apocalyptic number.

21010022002111 is a deficient number, since it is larger than the sum of its proper divisors (1505923760129).

21010022002111 is a wasteful number, since it uses less digits than its factorization.

21010022002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269695 (or 269592 counting only the distinct ones).

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

Adding to 21010022002111 its reverse (11120022001012), we get a palindrome (32130044003123).

The spelling of 21010022002111 in words is "twenty-one trillion, ten billion, twenty-two million, two thousand, one hundred eleven".