120212020121 has 4 divisors (see below), whose sum is σ = 121402238244. Its totient is φ = 119021802000.

The previous prime is 120212020111. The next prime is 120212020207. The reversal of 120212020121 is 121020212021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121020212021 = 101 ⋅1198219921.

It can be written as a sum of positive squares in 2 ways, for example, as 56927574025 + 63284446096 = 238595^2 + 251564^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212020121 - 2⁶ = 120212020057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120212020096 and 120212020105.

It is not an unprimeable number, because it can be changed into a prime (120212020111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595108910 + ... + 595109111.

It is an arithmetic number, because the mean of its divisors is an integer number (30350559561).

Almost surely, 2^120212020121 is an apocalyptic number.

It is an amenable number.

120212020121 is a deficient number, since it is larger than the sum of its proper divisors (1190218123).

120212020121 is a wasteful number, since it uses less digits than its factorization.

120212020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190218122.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 120212020121 its reverse (121020212021), we get a palindrome (241232232142).

The spelling of 120212020121 in words is "one hundred twenty billion, two hundred twelve million, twenty thousand, one hundred twenty-one".