120020131121 has 16 divisors (see below), whose sum is σ = 138703078080. Its totient is φ = 102639022080.

The previous prime is 120020131093. The next prime is 120020131139. The reversal of 120020131121 is 121131020021.

It is a cyclic number.

It is not a de Polignac number, because 120020131121 - 2¹⁸ = 120019868977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120020131096 and 120020131105.

It is not an unprimeable number, because it can be changed into a prime (120020131141) 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, 210065 + ... + 533073.

It is an arithmetic number, because the mean of its divisors is an integer number (8668942380).

Almost surely, 2^120020131121 is an apocalyptic number.

120020131121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120020131121 is a deficient number, since it is larger than the sum of its proper divisors (18682946959).

120020131121 is a wasteful number, since it uses less digits than its factorization.

120020131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325024.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 120020131121 its reverse (121131020021), we get a palindrome (241151151142).

Subtracting 120020131121 from its reverse (121131020021), we obtain a square (1110888900 = 33330²).

The spelling of 120020131121 in words is "one hundred twenty billion, twenty million, one hundred thirty-one thousand, one hundred twenty-one".