100021451124 has 192 divisors, whose sum is σ = 292896898560. Its totient is φ = 25902858240.

The previous prime is 100021451099. The next prime is 100021451177. The reversal of 100021451124 is 421154120001.

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

It is a self number, because there is not a number n which added to its sum of digits gives 100021451124.

It is a congruent number.

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, 17431584 + ... + 17437320.

It is an arithmetic number, because the mean of its divisors is an integer number (1525504680).

Almost surely, 2^100021451124 is an apocalyptic number.

100021451124 is a gapful number since it is divisible by the number (14) 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 100021451124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146448449280).

100021451124 is an abundant number, since it is smaller than the sum of its proper divisors (192875447436).

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

100021451124 is a wasteful number, since it uses less digits than its factorization.

100021451124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6218 (or 6216 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 100021451124 its reverse (421154120001), we get a palindrome (521175571125).

The spelling of 100021451124 in words is "one hundred billion, twenty-one million, four hundred fifty-one thousand, one hundred twenty-four".