21112212202 has 16 divisors (see below), whose sum is σ = 32034405312. Its totient is φ = 10434453120.

The previous prime is 21112212169. The next prime is 21112212223. The reversal of 21112212202 is 20221221112.

It is a happy number.

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, 19002 + ... + 206362.

It is an arithmetic number, because the mean of its divisors is an integer number (2002150332).

Almost surely, 2^21112212202 is an apocalyptic number.

21112212202 is a deficient number, since it is larger than the sum of its proper divisors (10922193110).

21112212202 is a wasteful number, since it uses less digits than its factorization.

21112212202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188013.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21112212202 its reverse (20221221112), we get a palindrome (41333433314).

The spelling of 21112212202 in words is "twenty-one billion, one hundred twelve million, two hundred twelve thousand, two hundred two".