10100021400 has 576 divisors, whose sum is σ = 40599187200. Its totient is φ = 2201472000.

The previous prime is 10100021369. The next prime is 10100021411. The reversal of 10100021400 is 412000101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 47867295 + ... + 47867505.

It is an arithmetic number, because the mean of its divisors is an integer number (70484700).

Almost surely, 2^10100021400 is an apocalyptic number.

10100021400 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 10100021400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20299593600).

10100021400 is an abundant number, since it is smaller than the sum of its proper divisors (30499165800).

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

10100021400 is a wasteful number, since it uses less digits than its factorization.

10100021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10100021400 its reverse (412000101), we get a palindrome (10512021501).

The spelling of 10100021400 in words is "ten billion, one hundred million, twenty-one thousand, four hundred".