21220201010 has 8 divisors (see below), whose sum is σ = 38196361836. Its totient is φ = 8488080400.

The previous prime is 21220200931. The next prime is 21220201031. The reversal of 21220201010 is 1010202212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20400123241 + 820077769 = 142829^2 + 28637^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 21220200982 and 21220201000.

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, 1061010041 + ... + 1061010060.

Almost surely, 2^21220201010 is an apocalyptic number.

21220201010 is a deficient number, since it is larger than the sum of its proper divisors (16976160826).

21220201010 is a wasteful number, since it uses less digits than its factorization.

21220201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122020108.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21220201010 its reverse (1010202212), we get a palindrome (22230403222).

The spelling of 21220201010 in words is "twenty-one billion, two hundred twenty million, two hundred one thousand, ten".