210101012122121 has 8 divisors (see below), whose sum is σ = 210590237052288. Its totient is φ = 209611795302000.

The previous prime is 210101012122097. The next prime is 210101012122123. The reversal of 210101012122121 is 121221210101012.

210101012122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-210101012122121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210101012122121.

It is not an unprimeable number, because it can be changed into a prime (210101012122123) 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, 51487766 + ... + 55418336.

It is an arithmetic number, because the mean of its divisors is an integer number (26323779631536).

Almost surely, 2^{210101012122121} is an apocalyptic number.

It is an amenable number.

210101012122121 is a deficient number, since it is larger than the sum of its proper divisors (489224930167).

210101012122121 is a wasteful number, since it uses less digits than its factorization.

210101012122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055023.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 210101012122121 its reverse (121221210101012), we get a palindrome (331322222223133).

The spelling of 210101012122121 in words is "two hundred ten trillion, one hundred one billion, twelve million, one hundred twenty-two thousand, one hundred twenty-one".