21112120202 has 16 divisors (see below), whose sum is σ = 32087512800. Its totient is φ = 10416582672.

The previous prime is 21112120181. The next prime is 21112120219. The reversal of 21112120202 is 20202121112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67049 + ... + 216147.

It is an arithmetic number, because the mean of its divisors is an integer number (2005469550).

Almost surely, 2^21112120202 is an apocalyptic number.

21112120202 is a deficient number, since it is larger than the sum of its proper divisors (10975392598).

21112120202 is a wasteful number, since it uses less digits than its factorization.

21112120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150037.

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

Adding to 21112120202 its reverse (20202121112), we get a palindrome (41314241314).

The spelling of 21112120202 in words is "twenty-one billion, one hundred twelve million, one hundred twenty thousand, two hundred two".