21112021202 has 16 divisors (see below), whose sum is σ = 32708025600. Its totient is φ = 10209730320.

The previous prime is 21112021201. The next prime is 21112021237. The reversal of 21112021202 is 20212021112.

It is not an unprimeable number, because it can be changed into a prime (21112021201) by changing a digit.

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, 15749 + ... + 206087.

It is an arithmetic number, because the mean of its divisors is an integer number (2044251600).

Almost surely, 2^21112021202 is an apocalyptic number.

21112021202 is a deficient number, since it is larger than the sum of its proper divisors (11596004398).

21112021202 is a wasteful number, since it uses less digits than its factorization.

21112021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192161.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21112021202 its reverse (20212021112), we get a palindrome (41324042314).

The spelling of 21112021202 in words is "twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred two".