212111232030 has 48 divisors (see below), whose sum is σ = 557685732240. Its totient is φ = 55927453824.

The previous prime is 212111232019. The next prime is 212111232043. The reversal of 212111232030 is 30232111212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212111231994 and 212111232012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13232392 + ... + 13248411.

It is an arithmetic number, because the mean of its divisors is an integer number (11618452755).

Almost surely, 2^212111232030 is an apocalyptic number.

212111232030 is an abundant number, since it is smaller than the sum of its proper divisors (345574500210).

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

212111232030 is a wasteful number, since it uses less digits than its factorization.

212111232030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26480905 (or 26480902 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 212111232030 its reverse (30232111212), we get a palindrome (242343343242).

The spelling of 212111232030 in words is "two hundred twelve billion, one hundred eleven million, two hundred thirty-two thousand, thirty".