210013021123 has 8 divisors (see below), whose sum is σ = 212363971776. Its totient is φ = 207673401000.

The previous prime is 210013021111. The next prime is 210013021139. The reversal of 210013021123 is 321120310012.

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

It is a cyclic number.

It is not a de Polignac number, because 210013021123 - 2⁹ = 210013020611 is a prime.

It is a super-2 number, since 2×210013021123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210013021097 and 210013021106.

It is not an unprimeable number, because it can be changed into a prime (210013021223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795353 + ... + 2869498.

It is an arithmetic number, because the mean of its divisors is an integer number (26545496472).

Almost surely, 2^210013021123 is an apocalyptic number.

210013021123 is a deficient number, since it is larger than the sum of its proper divisors (2350950653).

210013021123 is a wasteful number, since it uses less digits than its factorization.

210013021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5665265.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 210013021123 its reverse (321120310012), we get a palindrome (531133331135).

The spelling of 210013021123 in words is "two hundred ten billion, thirteen million, twenty-one thousand, one hundred twenty-three".