210123031021123 has 8 divisors (see below), whose sum is σ = 230898300845040. Its totient is φ = 189626623879680.

The previous prime is 210123031021037. The next prime is 210123031021177. The reversal of 210123031021123 is 321120130321012.

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 210123031021123 - 2²¹ = 210123028923971 is a prime.

It is a super-2 number, since 2×210123031021123² (a number of 29 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 = 210123031021094 and 210123031021103.

It is not an unprimeable number, because it can be changed into a prime (210123031021823) 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, 69715669038 + ... + 69715672051.

It is an arithmetic number, because the mean of its divisors is an integer number (28862287605630).

Almost surely, 2^{210123031021123} is an apocalyptic number.

210123031021123 is a deficient number, since it is larger than the sum of its proper divisors (20775269823917).

210123031021123 is a wasteful number, since it uses less digits than its factorization.

210123031021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139431341237.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 210123031021123 its reverse (321120130321012), we get a palindrome (531243161342135).

The spelling of 210123031021123 in words is "two hundred ten trillion, one hundred twenty-three billion, thirty-one million, twenty-one thousand, one hundred twenty-three".