1421831012250 has 128 divisors (see below), whose sum is σ = 3878959249152. Its totient is φ = 344023680000.

The previous prime is 1421831012227. The next prime is 1421831012267. The reversal of 1421831012250 is 522101381241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4132854 + ... + 4463646.

It is an arithmetic number, because the mean of its divisors is an integer number (30304369134).

Almost surely, 2^{1421831012250} is an apocalyptic number.

1421831012250 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 1421831012250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1939479624576).

1421831012250 is an abundant number, since it is smaller than the sum of its proper divisors (2457128236902).

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

1421831012250 is a wasteful number, since it uses less digits than its factorization.

1421831012250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331345 (or 331335 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

Adding to 1421831012250 its reverse (522101381241), we get a palindrome (1943932393491).

The spelling of 1421831012250 in words is "one trillion, four hundred twenty-one billion, eight hundred thirty-one million, twelve thousand, two hundred fifty".