21011202111202 has 16 divisors (see below), whose sum is σ = 32924175795072. Its totient is φ = 10037506758400.

The previous prime is 21011202111187. The next prime is 21011202111203. The reversal of 21011202111202 is 20211120211012.

It is a super-2 number, since 2×21011202111202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21011202111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257436799 + ... + 257518402.

It is an arithmetic number, because the mean of its divisors is an integer number (2057760987192).

Almost surely, 2^{21011202111202} is an apocalyptic number.

21011202111202 is a deficient number, since it is larger than the sum of its proper divisors (11912973683870).

21011202111202 is a wasteful number, since it uses less digits than its factorization.

21011202111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514956113.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21011202111202 its reverse (20211120211012), we get a palindrome (41222322322214).

The spelling of 21011202111202 in words is "twenty-one trillion, eleven billion, two hundred two million, one hundred eleven thousand, two hundred two".