21222011010 has 32 divisors (see below), whose sum is σ = 50956880832. Its totient is φ = 5656530240.

The previous prime is 21222011009. The next prime is 21222011033. The reversal of 21222011010 is 1011022212.

It is a super-2 number, since 2×21222011010² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102049 + ... + 229908.

It is an arithmetic number, because the mean of its divisors is an integer number (1592402526).

Almost surely, 2^21222011010 is an apocalyptic number.

21222011010 is an abundant number, since it is smaller than the sum of its proper divisors (29734869822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21222011010 is a wasteful number, since it uses less digits than its factorization.

21222011010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334098.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21222011010 its reverse (1011022212), we get a palindrome (22233033222).

The spelling of 21222011010 in words is "twenty-one billion, two hundred twenty-two million, eleven thousand, ten".