101100100420 has 72 divisors (see below), whose sum is σ = 243512240832. Its totient is φ = 35165232960.

The previous prime is 101100100399. The next prime is 101100100421. The reversal of 101100100420 is 24001001101.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101100100397 and 101100100406.

It is not an unprimeable number, because it can be changed into a prime (101100100421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 852534 + ... + 963853.

It is an arithmetic number, because the mean of its divisors is an integer number (3382114456).

Almost surely, 2^101100100420 is an apocalyptic number.

101100100420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101100100420 is an abundant number, since it is smaller than the sum of its proper divisors (142412140412).

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

101100100420 is a wasteful number, since it uses less digits than its factorization.

101100100420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816441 (or 1816428 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101100100420 its reverse (24001001101), we get a palindrome (125101101521).

The spelling of 101100100420 in words is "one hundred one billion, one hundred million, one hundred thousand, four hundred twenty".