210120020012121 has 16 divisors (see below), whose sum is σ = 288052213602048. Its totient is φ = 136159134537600.

The previous prime is 210120020012087. The next prime is 210120020012131. The reversal of 210120020012121 is 121210020021012.

210120020012121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210120020012121 - 2⁶ = 210120020012057 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210120020012121.

It is not an unprimeable number, because it can be changed into a prime (210120020012131) 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, 3151798486 + ... + 3151865151.

It is an arithmetic number, because the mean of its divisors is an integer number (18003263350128).

Almost surely, 2^{210120020012121} is an apocalyptic number.

It is an amenable number.

210120020012121 is a deficient number, since it is larger than the sum of its proper divisors (77932193589927).

210120020012121 is a wasteful number, since it uses less digits than its factorization.

210120020012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6303663952.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210120020012121 its reverse (121210020021012), we get a palindrome (331330040033133).

The spelling of 210120020012121 in words is "two hundred ten trillion, one hundred twenty billion, twenty million, twelve thousand, one hundred twenty-one".