210120013221121 has 16 divisors (see below), whose sum is σ = 225391806109440. Its totient is φ = 195173877000960.

The previous prime is 210120013221071. The next prime is 210120013221143. The reversal of 210120013221121 is 121122310021012.

210120013221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210120013221121 - 2⁷ = 210120013220993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120013221221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30024135 + ... + 36355036.

It is an arithmetic number, because the mean of its divisors is an integer number (14086987881840).

Almost surely, 2^{210120013221121} is an apocalyptic number.

It is an amenable number.

210120013221121 is a deficient number, since it is larger than the sum of its proper divisors (15271792888319).

210120013221121 is a wasteful number, since it uses less digits than its factorization.

210120013221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66381624.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 210120013221121 its reverse (121122310021012), we get a palindrome (331242323242133).

The spelling of 210120013221121 in words is "two hundred ten trillion, one hundred twenty billion, thirteen million, two hundred twenty-one thousand, one hundred twenty-one".