21222011302 has 8 divisors (see below), whose sum is σ = 33705547416. Its totient is φ = 9986828832.

The previous prime is 21222011299. The next prime is 21222011309. The reversal of 21222011302 is 20311022212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222011309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312088368 + ... + 312088435.

It is an arithmetic number, because the mean of its divisors is an integer number (4213193427).

Almost surely, 2^21222011302 is an apocalyptic number.

21222011302 is a deficient number, since it is larger than the sum of its proper divisors (12483536114).

21222011302 is a wasteful number, since it uses less digits than its factorization.

21222011302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624176822.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21222011302 its reverse (20311022212), we get a palindrome (41533033514).

The spelling of 21222011302 in words is "twenty-one billion, two hundred twenty-two million, eleven thousand, three hundred two".