120012112202221 has 4 divisors (see below), whose sum is σ = 120020591839932. Its totient is φ = 120003632564512.

The previous prime is 120012112202207. The next prime is 120012112202233. The reversal of 120012112202221 is 122202211210021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21881017621225 + 98131094580996 = 4677715^2 + 9906114^2 .

It is a cyclic number.

It is not a de Polignac number, because 120012112202221 - 2¹¹ = 120012112200173 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 (120012112202261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4239797626 + ... + 4239825931.

It is an arithmetic number, because the mean of its divisors is an integer number (30005147959983).

Almost surely, 2^{120012112202221} is an apocalyptic number.

It is an amenable number.

120012112202221 is a deficient number, since it is larger than the sum of its proper divisors (8479637711).

120012112202221 is an equidigital number, since it uses as much as digits as its factorization.

120012112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8479637710.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 120012112202221 its reverse (122202211210021), we get a palindrome (242214323412242).

The spelling of 120012112202221 in words is "one hundred twenty trillion, twelve billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".