120212131 has 4 divisors (see below), whose sum is σ = 129459232. Its totient is φ = 110965032.

The previous prime is 120212129. The next prime is 120212143. The reversal of 120212131 is 131212021.

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

It is a cyclic number.

It is not a de Polignac number, because 120212131 - 2¹ = 120212129 is a prime.

It is a super-2 number, since 2×120212131² = 28901912879122322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 9247087 = 120212131 / (1 + 2 + 0 + 2 + 1 + 2 + 1 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120212171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4623531 + ... + 4623556.

It is an arithmetic number, because the mean of its divisors is an integer number (32364808).

Almost surely, 2^120212131 is an apocalyptic number.

120212131 is a deficient number, since it is larger than the sum of its proper divisors (9247101).

120212131 is an equidigital number, since it uses as much as digits as its factorization.

120212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9247100.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 120212131 is about 10964.1292859944. The cubic root of 120212131 is about 493.5328882341.

Adding to 120212131 its reverse (131212021), we get a palindrome (251424152).

The spelling of 120212131 in words is "one hundred twenty million, two hundred twelve thousand, one hundred thirty-one".