21220211202 has 16 divisors (see below), whose sum is σ = 43809468672. Its totient is φ = 6845229360.

The previous prime is 21220211167. The next prime is 21220211219. The reversal of 21220211202 is 20211202212.

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, 57043393 + ... + 57043764.

It is an arithmetic number, because the mean of its divisors is an integer number (2738091792).

Almost surely, 2^21220211202 is an apocalyptic number.

21220211202 is an abundant number, since it is smaller than the sum of its proper divisors (22589257470).

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

21220211202 is a wasteful number, since it uses less digits than its factorization.

21220211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114087193.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21220211202 its reverse (20211202212), we get a palindrome (41431413414).

It can be divided in two parts, 212 and 20211202, that multiplied together give a palindrome (4284774824).

The spelling of 21220211202 in words is "twenty-one billion, two hundred twenty million, two hundred eleven thousand, two hundred two".