121120200020121 has 32 divisors (see below), whose sum is σ = 165222723760128. Its totient is φ = 78888452133120.

The previous prime is 121120200020033. The next prime is 121120200020161. The reversal of 121120200020121 is 121020002021121.

It is not a de Polignac number, because 121120200020121 - 2¹⁰ = 121120200019097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121120200020121.

It is not an unprimeable number, because it can be changed into a prime (121120200020161) 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, 207076801 + ... + 207660881.

It is an arithmetic number, because the mean of its divisors is an integer number (5163210117504).

Almost surely, 2^{121120200020121} is an apocalyptic number.

It is an amenable number.

121120200020121 is a deficient number, since it is larger than the sum of its proper divisors (44102523740007).

121120200020121 is a wasteful number, since it uses less digits than its factorization.

121120200020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586741.

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

Adding to 121120200020121 its reverse (121020002021121), we get a palindrome (242140202041242).

The spelling of 121120200020121 in words is "one hundred twenty-one trillion, one hundred twenty billion, two hundred million, twenty thousand, one hundred twenty-one".