120202122121 has 4 divisors (see below), whose sum is σ = 121392242244. Its totient is φ = 119012002000.

The previous prime is 120202122119. The next prime is 120202122143. The reversal of 120202122121 is 121221202021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90487257721 + 29714864400 = 300811^2 + 172380^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202122121 - 2¹ = 120202122119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120202122095 and 120202122104.

It is not an unprimeable number, because it can be changed into a prime (120202122421) 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, 595059910 + ... + 595060111.

It is an arithmetic number, because the mean of its divisors is an integer number (30348060561).

Almost surely, 2^120202122121 is an apocalyptic number.

It is an amenable number.

120202122121 is a deficient number, since it is larger than the sum of its proper divisors (1190120123).

120202122121 is a wasteful number, since it uses less digits than its factorization.

120202122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190120122.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120202122121 its reverse (121221202021), we get a palindrome (241423324142).

The spelling of 120202122121 in words is "one hundred twenty billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-one".