12101021430 has 128 divisors (see below), whose sum is σ = 31819309056. Its totient is φ = 2932070400.

The previous prime is 12101021417. The next prime is 12101021431. The reversal of 12101021430 is 3412010121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101021431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9975504 + ... + 9976716.

It is an arithmetic number, because the mean of its divisors is an integer number (248588352).

Almost surely, 2^12101021430 is an apocalyptic number.

12101021430 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 12101021430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15909654528).

12101021430 is an abundant number, since it is smaller than the sum of its proper divisors (19718287626).

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

12101021430 is a wasteful number, since it uses less digits than its factorization.

12101021430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12101021430 its reverse (3412010121), we get a palindrome (15513031551).

The spelling of 12101021430 in words is "twelve billion, one hundred one million, twenty-one thousand, four hundred thirty".