211123130232 has 64 divisors (see below), whose sum is σ = 612212094720. Its totient is φ = 59420579328.

The previous prime is 211123130221. The next prime is 211123130297. The reversal of 211123130232 is 232031321112.

It is a super-2 number, since 2×211123130232² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 211123130199 and 211123130208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9366993 + ... + 9389504.

It is an arithmetic number, because the mean of its divisors is an integer number (9565813980).

Almost surely, 2^211123130232 is an apocalyptic number.

It is an amenable number.

211123130232 is an abundant number, since it is smaller than the sum of its proper divisors (401088964488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211123130232 is a wasteful number, since it uses less digits than its factorization.

211123130232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18756580 (or 18756576 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 211123130232 its reverse (232031321112), we get a palindrome (443154451344).

The spelling of 211123130232 in words is "two hundred eleven billion, one hundred twenty-three million, one hundred thirty thousand, two hundred thirty-two".