5212121112 has 48 divisors (see below), whose sum is σ = 15399451080. Its totient is φ = 1579430400.

The previous prime is 5212121111. The next prime is 5212121119. The reversal of 5212121112 is 2111212125.

It is a super-2 number, since 2×5212121112² = 54332412972312233088, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5212121111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3289689 + ... + 3291272.

Almost surely, 2^5212121112 is an apocalyptic number.

It is an amenable number.

5212121112 is an abundant number, since it is smaller than the sum of its proper divisors (10187329968).

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

5212121112 is a wasteful number, since it uses less digits than its factorization.

5212121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580984 (or 6580977 counting only the distinct ones).

The product of its digits is 80, while the sum is 18.

The square root of 5212121112 is about 72195.0213795938. The cubic root of 5212121112 is about 1733.8232918988.

Adding to 5212121112 its reverse (2111212125), we get a palindrome (7323333237).

The spelling of 5212121112 in words is "five billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".