21220120011202 has 12 divisors (see below), whose sum is σ = 37026944101350. Its totient is φ = 9094337147616.

The previous prime is 21220120011197. The next prime is 21220120011229. The reversal of 21220120011202 is 20211002102212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20577010643721 + 643109367481 = 4536189^2 + 801941^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108265918327 + ... + 108265918522.

Almost surely, 2^{21220120011202} is an apocalyptic number.

21220120011202 is a deficient number, since it is larger than the sum of its proper divisors (15806824090148).

21220120011202 is a wasteful number, since it uses less digits than its factorization.

21220120011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216531836865 (or 216531836858 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21220120011202 its reverse (20211002102212), we get a palindrome (41431122113414).

The spelling of 21220120011202 in words is "twenty-one trillion, two hundred twenty billion, one hundred twenty million, eleven thousand, two hundred two".