21110212001222 has 64 divisors (see below), whose sum is σ = 34472399592960. Its totient is φ = 9662151686400.

The previous prime is 21110212001167. The next prime is 21110212001267. The reversal of 21110212001222 is 22210021201112.

It is a self number, because there is not a number n which added to its sum of digits gives 21110212001222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 812011928 + ... + 812037924.

It is an arithmetic number, because the mean of its divisors is an integer number (538631243640).

Almost surely, 2^{21110212001222} is an apocalyptic number.

21110212001222 is a deficient number, since it is larger than the sum of its proper divisors (13362187591738).

21110212001222 is a wasteful number, since it uses less digits than its factorization.

21110212001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31037.

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

Adding to 21110212001222 its reverse (22210021201112), we get a palindrome (43320233202334).

The spelling of 21110212001222 in words is "twenty-one trillion, one hundred ten billion, two hundred twelve million, one thousand, two hundred twenty-two".