21010202202 has 16 divisors (see below), whose sum is σ = 45840441312. Its totient is φ = 6366727920.

The previous prime is 21010202159. The next prime is 21010202203. The reversal of 21010202202 is 20220201012.

It is not an unprimeable number, because it can be changed into a prime (21010202203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159168133 + ... + 159168264.

It is an arithmetic number, because the mean of its divisors is an integer number (2865027582).

Almost surely, 2^21010202202 is an apocalyptic number.

21010202202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21010202202 is an abundant number, since it is smaller than the sum of its proper divisors (24830239110).

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

21010202202 is a wasteful number, since it uses less digits than its factorization.

21010202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318336413.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21010202202 its reverse (20220201012), we get a palindrome (41230403214).

The spelling of 21010202202 in words is "twenty-one billion, ten million, two hundred two thousand, two hundred two".