21112011202 has 8 divisors (see below), whose sum is σ = 32265526716. Its totient is φ = 10356835632.

The previous prime is 21112011191. The next prime is 21112011287. The reversal of 21112011202 is 20211021112.

It can be written as a sum of positive squares in 2 ways, for example, as 20280323281 + 831687921 = 142409^2 + 28839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99584853 + ... + 99585064.

Almost surely, 2^21112011202 is an apocalyptic number.

21112011202 is a deficient number, since it is larger than the sum of its proper divisors (11153515514).

21112011202 is a wasteful number, since it uses less digits than its factorization.

21112011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199169972.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21112011202 its reverse (20211021112), we get a palindrome (41323032314).

The spelling of 21112011202 in words is "twenty-one billion, one hundred twelve million, eleven thousand, two hundred two".