210020102123 has 8 divisors (see below), whose sum is σ = 233974650000. Its totient is φ = 187179719328.

The previous prime is 210020102113. The next prime is 210020102167. The reversal of 210020102123 is 321201020012.

It is a happy number.

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 210020102123 - 2¹⁶ = 210020036587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210020102098 and 210020102107.

It is not an unprimeable number, because it can be changed into a prime (210020102113) 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, 278540873 + ... + 278541626.

It is an arithmetic number, because the mean of its divisors is an integer number (29246831250).

Almost surely, 2^210020102123 is an apocalyptic number.

210020102123 is a deficient number, since it is larger than the sum of its proper divisors (23954547877).

210020102123 is a wasteful number, since it uses less digits than its factorization.

210020102123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557082541.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 210020102123 its reverse (321201020012), we get a palindrome (531221122135).

The spelling of 210020102123 in words is "two hundred ten billion, twenty million, one hundred two thousand, one hundred twenty-three".