120121202121 has 8 divisors (see below), whose sum is σ = 162552074784. Its totient is φ = 78885565440.

The previous prime is 120121202119. The next prime is 120121202137. The reversal of 120121202121 is 121202121021.

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

It is not a de Polignac number, because 120121202121 - 2¹ = 120121202119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120121202121.

It is not an unprimeable number, because it can be changed into a prime (120121202171) 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, 298808760 + ... + 298809161.

It is an arithmetic number, because the mean of its divisors is an integer number (20319009348).

Almost surely, 2^120121202121 is an apocalyptic number.

It is an amenable number.

120121202121 is a deficient number, since it is larger than the sum of its proper divisors (42430872663).

120121202121 is an equidigital number, since it uses as much as digits as its factorization.

120121202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597617991.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120121202121 its reverse (121202121021), we get a palindrome (241323323142).

The spelling of 120121202121 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-one".