12101201221 has 8 divisors (see below), whose sum is σ = 12160764000. Its totient is φ = 12041781360.

The previous prime is 12101201197. The next prime is 12101201243. The reversal of 12101201221 is 12210210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12101201221 - 2³¹ = 9953717573 is a prime.

It is a super-2 number, since 2×12101201221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101204221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136050 + ... + 206668.

It is an arithmetic number, because the mean of its divisors is an integer number (1520095500).

Almost surely, 2^12101201221 is an apocalyptic number.

It is an amenable number.

12101201221 is a deficient number, since it is larger than the sum of its proper divisors (59562779).

12101201221 is an equidigital number, since it uses as much as digits as its factorization.

12101201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71459.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12101201221 its reverse (12210210121), we get a palindrome (24311411342).

The spelling of 12101201221 in words is "twelve billion, one hundred one million, two hundred one thousand, two hundred twenty-one".