15212000000 has 126 divisors (see below), whose sum is σ = 37965217164. Its totient is φ = 6083200000.

The previous prime is 15211999973. The next prime is 15212000009. The reversal of 15212000000 is 21251.

It is not an unprimeable number, because it can be changed into a prime (15212000009) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 3998099 + ... + 4001901.

Almost surely, 2^15212000000 is an apocalyptic number.

15212000000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18982608582).

15212000000 is an abundant number, since it is smaller than the sum of its proper divisors (22753217164).

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

15212000000 is an frugal number, since it uses more digits than its factorization.

15212000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3849 (or 3810 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

Adding to 15212000000 its reverse (21251), we get a palindrome (15212021251).

The spelling of 15212000000 in words is "fifteen billion, two hundred twelve million", and thus it is an aban number.