12211021221013 has 16 divisors (see below), whose sum is σ = 12764515138560. Its totient is φ = 11659413782016.

The previous prime is 12211021220989. The next prime is 12211021221041. The reversal of 12211021221013 is 31012212011221.

It is a cyclic number.

It is not a de Polignac number, because 12211021221013 - 2²⁹ = 12210484350101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211021228013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121927203 + ... + 122027311.

It is an arithmetic number, because the mean of its divisors is an integer number (797782196160).

Almost surely, 2^{12211021221013} is an apocalyptic number.

It is an amenable number.

12211021221013 is a deficient number, since it is larger than the sum of its proper divisors (553493917547).

12211021221013 is a wasteful number, since it uses less digits than its factorization.

12211021221013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109476.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12211021221013 its reverse (31012212011221), we get a palindrome (43223233232234).

The spelling of 12211021221013 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty-one thousand, thirteen".