12120222201021 has 24 divisors (see below), whose sum is σ = 19104999915456. Its totient is φ = 7343101535040.

The previous prime is 12120222201001. The next prime is 12120222201049. The reversal of 12120222201021 is 12010222202121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12120222201021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120222200985 and 12120222201003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120222201001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20436825 + ... + 21021518.

It is an arithmetic number, because the mean of its divisors is an integer number (796041663144).

Almost surely, 2^{12120222201021} is an apocalyptic number.

12120222201021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12120222201021 is a deficient number, since it is larger than the sum of its proper divisors (6984777714435).

12120222201021 is a wasteful number, since it uses less digits than its factorization.

12120222201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41461313 (or 41461310 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12120222201021 its reverse (12010222202121), we get a palindrome (24130444403142).

The spelling of 12120222201021 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-two million, two hundred one thousand, twenty-one".