120212101 has 4 divisors (see below), whose sum is σ = 120410752. Its totient is φ = 120013452.

The previous prime is 120212089. The next prime is 120212129. The reversal of 120212101 is 101212021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101212021 = 1283 ⋅78887.

It is a cyclic number.

It is not a de Polignac number, because 120212101 - 2⁹ = 120211589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212171) 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, 98415 + ... + 99628.

It is an arithmetic number, because the mean of its divisors is an integer number (30102688).

Almost surely, 2^120212101 is an apocalyptic number.

It is an amenable number.

120212101 is a deficient number, since it is larger than the sum of its proper divisors (198651).

120212101 is an equidigital number, since it uses as much as digits as its factorization.

120212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198650.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 120212101 is about 10964.1279178966. The cubic root of 120212101 is about 493.5328471789.

Adding to 120212101 its reverse (101212021), we get a palindrome (221424122).

The spelling of 120212101 in words is "one hundred twenty million, two hundred twelve thousand, one hundred one".