21201101202 has 16 divisors (see below), whose sum is σ = 42813875520. Its totient is φ = 6998421552.

The previous prime is 21201101179. The next prime is 21201101213. The reversal of 21201101202 is 20210110212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17152377 + ... + 17153612.

It is an arithmetic number, because the mean of its divisors is an integer number (2675867220).

Almost surely, 2^21201101202 is an apocalyptic number.

21201101202 is an abundant number, since it is smaller than the sum of its proper divisors (21612774318).

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

21201101202 is a wasteful number, since it uses less digits than its factorization.

21201101202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34306097.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21201101202 its reverse (20210110212), we get a palindrome (41411211414).

The spelling of 21201101202 in words is "twenty-one billion, two hundred one million, one hundred one thousand, two hundred two".