120121000020121 has 16 divisors (see below), whose sum is σ = 124630656102400. Its totient is φ = 115651127615760.

The previous prime is 120121000020113. The next prime is 120121000020127. The reversal of 120121000020121 is 121020000121021.

It is a cyclic number.

It is not a de Polignac number, because 120121000020121 - 2³ = 120121000020113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120121000020127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65242246 + ... + 67058128.

It is an arithmetic number, because the mean of its divisors is an integer number (7789416006400).

Almost surely, 2^{120121000020121} is an apocalyptic number.

It is an amenable number.

120121000020121 is a deficient number, since it is larger than the sum of its proper divisors (4509656082279).

120121000020121 is a wasteful number, since it uses less digits than its factorization.

120121000020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826836.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120121000020121 its reverse (121020000121021), we get a palindrome (241141000141142).

The spelling of 120121000020121 in words is "one hundred twenty trillion, one hundred twenty-one billion, twenty thousand, one hundred twenty-one".