21211022022011 has 8 divisors (see below), whose sum is σ = 21702533358384. Its totient is φ = 20724941750400.

The previous prime is 21211022021933. The next prime is 21211022022077. The reversal of 21211022022011 is 11022022011212.

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 21211022022011 - 2³⁸ = 20936144115067 is a prime.

It is a super-2 number, since 2×21211022022011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21211022022611) 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, 1357758290 + ... + 1357773911.

It is an arithmetic number, because the mean of its divisors is an integer number (2712816669798).

Almost surely, 2^{21211022022011} is an apocalyptic number.

21211022022011 is a deficient number, since it is larger than the sum of its proper divisors (491511336373).

21211022022011 is a wasteful number, since it uses less digits than its factorization.

21211022022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715532381.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21211022022011 its reverse (11022022011212), we get a palindrome (32233044033223).

It can be divided in two parts, 212 and 11022022011, that multiplied together give a palindrome (2336668666332).

The spelling of 21211022022011 in words is "twenty-one trillion, two hundred eleven billion, twenty-two million, twenty-two thousand, eleven".