210001212101122 has 8 divisors (see below), whose sum is σ = 339232727240316. Its totient is φ = 96923636354352.

The previous prime is 210001212101101. The next prime is 210001212101207. The reversal of 210001212101122 is 221101212100012.

It can be written as a sum of positive squares in 2 ways, for example, as 207217723613481 + 2783488487641 = 14395059^2 + 1668379^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 210001212101096 and 210001212101105.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4038484848073 + ... + 4038484848124.

Almost surely, 2^{210001212101122} is an apocalyptic number.

210001212101122 is a deficient number, since it is larger than the sum of its proper divisors (129231515139194).

210001212101122 is a wasteful number, since it uses less digits than its factorization.

210001212101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076969696212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210001212101122 its reverse (221101212100012), we get a palindrome (431102424201134).

The spelling of 210001212101122 in words is "two hundred ten trillion, one billion, two hundred twelve million, one hundred one thousand, one hundred twenty-two".