21322012221202 has 16 divisors (see below), whose sum is σ = 39874931946432. Its totient is φ = 8307277488720.

The previous prime is 21322012221149. The next prime is 21322012221217. The reversal of 21322012221202 is 20212221022312.

It is a happy number.

It is a super-2 number, since 2×21322012221202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 69227312253 + ... + 69227312560.

It is an arithmetic number, because the mean of its divisors is an integer number (2492183246652).

Almost surely, 2^{21322012221202} is an apocalyptic number.

21322012221202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21322012221202 is a deficient number, since it is larger than the sum of its proper divisors (18552919725230).

21322012221202 is a wasteful number, since it uses less digits than its factorization.

21322012221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138454624833.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21322012221202 its reverse (20212221022312), we get a palindrome (41534233243514).

The spelling of 21322012221202 in words is "twenty-one trillion, three hundred twenty-two billion, twelve million, two hundred twenty-one thousand, two hundred two".