100220477400 has 144 divisors (see below), whose sum is σ = 356372335800. Its totient is φ = 25153367040.

The previous prime is 100220477393. The next prime is 100220477419. The reversal of 100220477400 is 4774022001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1606990 + ... + 1668189.

Almost surely, 2^100220477400 is an apocalyptic number.

100220477400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220477400 is an abundant number, since it is smaller than the sum of its proper divisors (256151858400).

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

100220477400 is a wasteful number, since it uses less digits than its factorization.

100220477400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275218 (or 3275206 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

Adding to 100220477400 its reverse (4774022001), we get a palindrome (104994499401).

The spelling of 100220477400 in words is "one hundred billion, two hundred twenty million, four hundred seventy-seven thousand, four hundred".