212030331123 has 32 divisors (see below), whose sum is σ = 322527744000. Its totient is φ = 122742084096.

The previous prime is 212030331101. The next prime is 212030331137. The reversal of 212030331123 is 321133030212.

It is not a de Polignac number, because 212030331123 - 2³² = 207735363827 is a prime.

It is a super-2 number, since 2×212030331123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212030331123.

It is not an unprimeable number, because it can be changed into a prime (212030331523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1231278 + ... + 1392876.

It is an arithmetic number, because the mean of its divisors is an integer number (10078992000).

Almost surely, 2^212030331123 is an apocalyptic number.

212030331123 is a deficient number, since it is larger than the sum of its proper divisors (110497412877).

212030331123 is a wasteful number, since it uses less digits than its factorization.

212030331123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163611.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 212030331123 its reverse (321133030212), we get a palindrome (533163361335).

The spelling of 212030331123 in words is "two hundred twelve billion, thirty million, three hundred thirty-one thousand, one hundred twenty-three".