120012021101221 has 4 divisors (see below), whose sum is σ = 127071551754252. Its totient is φ = 112952490448192.

The previous prime is 120012021101209. The next prime is 120012021101239. The reversal of 120012021101221 is 122101120210021.

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 103809383538721 + 16202637562500 = 10188689^2 + 4025250^2 .

It is a cyclic number.

It is not a de Polignac number, because 120012021101221 - 2¹⁵ = 120012021068453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120012021101195 and 120012021101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120012321101221) 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, 3529765326490 + ... + 3529765326523.

It is an arithmetic number, because the mean of its divisors is an integer number (31767887938563).

Almost surely, 2^{120012021101221} is an apocalyptic number.

It is an amenable number.

120012021101221 is a deficient number, since it is larger than the sum of its proper divisors (7059530653031).

120012021101221 is an equidigital number, since it uses as much as digits as its factorization.

120012021101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059530653030.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120012021101221 its reverse (122101120210021), we get a palindrome (242113141311242).

The spelling of 120012021101221 in words is "one hundred twenty trillion, twelve billion, twenty-one million, one hundred one thousand, two hundred twenty-one".