120121202211121 has 8 divisors (see below), whose sum is σ = 121413816374760. Its totient is φ = 118829695216128.

The previous prime is 120121202211119. The next prime is 120121202211139. The reversal of 120121202211121 is 121112202121021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 53300059874721 + 66821142336400 = 7300689^2 + 8174420^2 .

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 120121202211121 - 2¹ = 120121202211119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121202211191) 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, 276574006 + ... + 277007983.

It is an arithmetic number, because the mean of its divisors is an integer number (15176727046845).

Almost surely, 2^{120121202211121} is an apocalyptic number.

It is an amenable number.

120121202211121 is a deficient number, since it is larger than the sum of its proper divisors (1292614163639).

120121202211121 is an equidigital number, since it uses as much as digits as its factorization.

120121202211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553584323.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 120121202211121 its reverse (121112202121021), we get a palindrome (241233404332142).

The spelling of 120121202211121 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred two million, two hundred eleven thousand, one hundred twenty-one".