21121102012202 has 16 divisors (see below), whose sum is σ = 31894541532000. Its totient is φ = 10489589323920.

The previous prime is 21121102012169. The next prime is 21121102012207. The reversal of 21121102012202 is 20221020112112.

It is a super-2 number, since 2×21121102012202² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21121102012207) 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, 52479677 + ... + 52880607.

It is an arithmetic number, because the mean of its divisors is an integer number (1993408845750).

Almost surely, 2^{21121102012202} is an apocalyptic number.

21121102012202 is a deficient number, since it is larger than the sum of its proper divisors (10773439519798).

21121102012202 is a wasteful number, since it uses less digits than its factorization.

21121102012202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577861.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21121102012202 its reverse (20221020112112), we get a palindrome (41342122124314).

The spelling of 21121102012202 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred two million, twelve thousand, two hundred two".