212121110032 has 40 divisors (see below), whose sum is σ = 445157304984. Its totient is φ = 97336126464.

The previous prime is 212121109997. The next prime is 212121110083. The reversal of 212121110032 is 230011121212.

It can be written as a sum of positive squares in 4 ways, for example, as 26770195456 + 185350914576 = 163616^2 + 430524^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 212121109988 and 212121110015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2911453 + ... + 2983420.

Almost surely, 2^212121110032 is an apocalyptic number.

It is an amenable number.

212121110032 is an abundant number, since it is smaller than the sum of its proper divisors (233036194952).

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

212121110032 is a wasteful number, since it uses less digits than its factorization.

212121110032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895067 (or 5895061 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212121110032 its reverse (230011121212), we get a palindrome (442132231244).

The spelling of 212121110032 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred ten thousand, thirty-two".