10121081250 has 192 divisors, whose sum is σ = 29428116480. Its totient is φ = 2272440000.

The previous prime is 10121081239. The next prime is 10121081263. The reversal of 10121081250 is 5218012101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7743097 + ... + 7744403.

It is an arithmetic number, because the mean of its divisors is an integer number (153271440).

Almost surely, 2^10121081250 is an apocalyptic number.

10121081250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10121081250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14714058240).

10121081250 is an abundant number, since it is smaller than the sum of its proper divisors (19307035230).

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

10121081250 is an equidigital number, since it uses as much as digits as its factorization.

10121081250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403 (or 1383 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 10121081250 its reverse (5218012101), we get a palindrome (15339093351).

The spelling of 10121081250 in words is "ten billion, one hundred twenty-one million, eighty-one thousand, two hundred fifty".