21222011320310 has 16 divisors (see below), whose sum is σ = 38199838992336. Its totient is φ = 8488755946848.

The previous prime is 21222011320259. The next prime is 21222011320327. The reversal of 21222011320310 is 1302311022212.

It is a super-2 number, since 2×21222011320310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4210769 + ... + 7757228.

It is an arithmetic number, because the mean of its divisors is an integer number (2387489937021).

Almost surely, 2^{21222011320310} is an apocalyptic number.

21222011320310 is a deficient number, since it is larger than the sum of its proper divisors (16977827672026).

21222011320310 is a wasteful number, since it uses less digits than its factorization.

21222011320310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12145327.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21222011320310 its reverse (1302311022212), we get a palindrome (22524322342522).

The spelling of 21222011320310 in words is "twenty-one trillion, two hundred twenty-two billion, eleven million, three hundred twenty thousand, three hundred ten".