10123987212 has 72 divisors (see below), whose sum is σ = 26304563376. Its totient is φ = 3280742784.

The previous prime is 10123987207. The next prime is 10123987217. The reversal of 10123987212 is 21278932101.

It is an interprime number because it is at equal distance from previous prime (10123987207) and next prime (10123987217).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (10123987217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2178163 + ... + 2182805.

It is an arithmetic number, because the mean of its divisors is an integer number (365341158).

Almost surely, 2^10123987212 is an apocalyptic number.

10123987212 is a gapful number since it is divisible by the number (12) 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 10123987212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13152281688).

10123987212 is an abundant number, since it is smaller than the sum of its proper divisors (16180576164).

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

10123987212 is a wasteful number, since it uses less digits than its factorization.

10123987212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327 (or 6322 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The spelling of 10123987212 in words is "ten billion, one hundred twenty-three million, nine hundred eighty-seven thousand, two hundred twelve".