21220202111012 has 24 divisors (see below), whose sum is σ = 37144956008160. Its totient is φ = 10607357905920.

The previous prime is 21220202110999. The next prime is 21220202111021. The reversal of 21220202111012 is 21011120202212.

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, 283765187 + ... + 283839957.

It is an arithmetic number, because the mean of its divisors is an integer number (1547706500340).

Almost surely, 2^{21220202111012} is an apocalyptic number.

It is an amenable number.

21220202111012 is a deficient number, since it is larger than the sum of its proper divisors (15924753897148).

21220202111012 is a wasteful number, since it uses less digits than its factorization.

21220202111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92171 (or 92169 counting only the distinct ones).

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

Adding to 21220202111012 its reverse (21011120202212), we get a palindrome (42231322313224).

The spelling of 21220202111012 in words is "twenty-one trillion, two hundred twenty billion, two hundred two million, one hundred eleven thousand, twelve".