120212002100121 has 32 divisors (see below), whose sum is σ = 170966514862080. Its totient is φ = 75022805808576.

The previous prime is 120212002100119. The next prime is 120212002100147. The reversal of 120212002100121 is 121001200212021.

It is not a de Polignac number, because 120212002100121 - 2¹ = 120212002100119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120212002100121.

It is not an unprimeable number, because it can be changed into a prime (120212002100161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194966451 + ... + 195582056.

It is an arithmetic number, because the mean of its divisors is an integer number (5342703589440).

Almost surely, 2^{120212002100121} is an apocalyptic number.

It is an amenable number.

120212002100121 is a deficient number, since it is larger than the sum of its proper divisors (50754512761959).

120212002100121 is a wasteful number, since it uses less digits than its factorization.

120212002100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390548653.

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

Adding to 120212002100121 its reverse (121001200212021), we get a palindrome (241213202312142).

The spelling of 120212002100121 in words is "one hundred twenty trillion, two hundred twelve billion, two million, one hundred thousand, one hundred twenty-one".