120121210213 has 8 divisors (see below), whose sum is σ = 125493653880. Its totient is φ = 114830788800.

The previous prime is 120121210177. The next prime is 120121210217. The reversal of 120121210213 is 312012121021.

It can be written as a sum of positive squares in 4 ways, for example, as 21752415169 + 98368795044 = 147487^2 + 313638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120121210213 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 (120121210217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20502570 + ... + 20508427.

It is an arithmetic number, because the mean of its divisors is an integer number (15686706735).

Almost surely, 2^120121210213 is an apocalyptic number.

It is an amenable number.

120121210213 is a deficient number, since it is larger than the sum of its proper divisors (5372443667).

120121210213 is a wasteful number, since it uses less digits than its factorization.

120121210213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41011127.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 120121210213 its reverse (312012121021), we get a palindrome (432133331234).

It can be divided in two parts, 12012121021 and 3, that multiplied together give a palindrome (36036363063).

The spelling of 120121210213 in words is "one hundred twenty billion, one hundred twenty-one million, two hundred ten thousand, two hundred thirteen".