12210120221 has 16 divisors (see below), whose sum is σ = 13248119808. Its totient is φ = 11186500800.

The previous prime is 12210120217. The next prime is 12210120229. The reversal of 12210120221 is 12202101221.

It is a cyclic number.

It is not a de Polignac number, because 12210120221 - 2² = 12210120217 is a prime.

It is a super-2 number, since 2×12210120221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12210120196 and 12210120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210120229) 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, 1139330 + ... + 1149996.

It is an arithmetic number, because the mean of its divisors is an integer number (828007488).

Almost surely, 2^12210120221 is an apocalyptic number.

It is an amenable number.

12210120221 is a deficient number, since it is larger than the sum of its proper divisors (1037999587).

12210120221 is a wasteful number, since it uses less digits than its factorization.

12210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332.

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

Adding to 12210120221 its reverse (12202101221), we get a palindrome (24412221442).

The spelling of 12210120221 in words is "twelve billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".