21222010021101 has 16 divisors (see below), whose sum is σ = 30525776904384. Its totient is φ = 13064530029824.

The previous prime is 21222010021099. The next prime is 21222010021109. The reversal of 21222010021101 is 10112001022212.

It is a cyclic number.

It is not a de Polignac number, because 21222010021101 - 2¹ = 21222010021099 is a prime.

It is a super-2 number, since 2×21222010021101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222010021109) 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 15 ways as a sum of consecutive naturals, for example, 3925637331 + ... + 3925642736.

It is an arithmetic number, because the mean of its divisors is an integer number (1907861056524).

Almost surely, 2^{21222010021101} is an apocalyptic number.

It is an amenable number.

21222010021101 is a deficient number, since it is larger than the sum of its proper divisors (9303766883283).

21222010021101 is a wasteful number, since it uses less digits than its factorization.

21222010021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7851280140.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21222010021101 its reverse (10112001022212), we get a palindrome (31334011043313).

The spelling of 21222010021101 in words is "twenty-one trillion, two hundred twenty-two billion, ten million, twenty-one thousand, one hundred one".