21220012120202 has 8 divisors (see below), whose sum is σ = 36377163634656. Its totient is φ = 9094290908652.

The previous prime is 21220012120199. The next prime is 21220012120387. The reversal of 21220012120202 is 20202121002212.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757857575708 + ... + 757857575735.

It is an arithmetic number, because the mean of its divisors is an integer number (4547145454332).

Almost surely, 2^{21220012120202} is an apocalyptic number.

21220012120202 is a deficient number, since it is larger than the sum of its proper divisors (15157151514454).

21220012120202 is a wasteful number, since it uses less digits than its factorization.

21220012120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515715151452.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 21220012120202 its reverse (20202121002212), we get a palindrome (41422133122414).

The spelling of 21220012120202 in words is "twenty-one trillion, two hundred twenty billion, twelve million, one hundred twenty thousand, two hundred two".