21201302022 has 32 divisors (see below), whose sum is σ = 43128729600. Its totient is φ = 6947101728.

The previous prime is 21201301999. The next prime is 21201302027. The reversal of 21201302022 is 22020310212.

It is a happy number.

It is a super-2 number, since 2×21201302022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21201301992 and 21201302010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21201302027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44572 + ... + 210687.

It is an arithmetic number, because the mean of its divisors is an integer number (1347772800).

Almost surely, 2^21201302022 is an apocalyptic number.

21201302022 is an abundant number, since it is smaller than the sum of its proper divisors (21927427578).

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

21201302022 is a wasteful number, since it uses less digits than its factorization.

21201302022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255500.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21201302022 its reverse (22020310212), we get a palindrome (43221612234).

The spelling of 21201302022 in words is "twenty-one billion, two hundred one million, three hundred two thousand, twenty-two".