21220222011101 has 16 divisors (see below), whose sum is σ = 21445198248960. Its totient is φ = 20996644463280.

The previous prime is 21220222011097. The next prime is 21220222011151. The reversal of 21220222011101 is 10111022202212.

It is a cyclic number.

It is not a de Polignac number, because 21220222011101 - 2² = 21220222011097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21220222011101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220222011151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34700876 + ... + 35307098.

It is an arithmetic number, because the mean of its divisors is an integer number (1340324890560).

Almost surely, 2^{21220222011101} is an apocalyptic number.

It is an amenable number.

21220222011101 is a deficient number, since it is larger than the sum of its proper divisors (224976237859).

21220222011101 is a wasteful number, since it uses less digits than its factorization.

21220222011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607376.

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

Adding to 21220222011101 its reverse (10111022202212), we get a palindrome (31331244213313).

The spelling of 21220222011101 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, eleven thousand, one hundred one".