1012420216500 has 384 divisors, whose sum is σ = 3730526392320. Its totient is φ = 207231552000.

The previous prime is 1012420216459. The next prime is 1012420216501. The reversal of 1012420216500 is 56120242101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012420216501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7673086 + ... + 7803914.

It is an arithmetic number, because the mean of its divisors is an integer number (9714912480).

Almost surely, 2^{1012420216500} is an apocalyptic number.

1012420216500 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 1012420216500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865263196160).

1012420216500 is an abundant number, since it is smaller than the sum of its proper divisors (2718106175820).

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

1012420216500 is a wasteful number, since it uses less digits than its factorization.

1012420216500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130936 (or 130924 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 1012420216500 its reverse (56120242101), we get a palindrome (1068540458601).

The spelling of 1012420216500 in words is "one trillion, twelve billion, four hundred twenty million, two hundred sixteen thousand, five hundred".