211020010123 has 8 divisors (see below), whose sum is σ = 227265748416. Its totient is φ = 194776190400.

The previous prime is 211020010121. The next prime is 211020010181. The reversal of 211020010123 is 321010020112.

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 211020010123 - 2¹ = 211020010121 is a prime.

It is a super-2 number, since 2×211020010123² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211020010121) 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, 247018 + ... + 695023.

It is an arithmetic number, because the mean of its divisors is an integer number (28408218552).

Almost surely, 2^211020010123 is an apocalyptic number.

211020010123 is a deficient number, since it is larger than the sum of its proper divisors (16245738293).

211020010123 is a wasteful number, since it uses less digits than its factorization.

211020010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959285.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 211020010123 its reverse (321010020112), we get a palindrome (532030030235).

The spelling of 211020010123 in words is "two hundred eleven billion, twenty million, ten thousand, one hundred twenty-three".