101224420 has 24 divisors (see below), whose sum is σ = 231896448. Its totient is φ = 36808800.

The previous prime is 101224399. The next prime is 101224421. The reversal of 101224420 is 24422101.

It is a junction number, because it is equal to n+sod(n) for n = 101224394 and 101224403.

It is not an unprimeable number, because it can be changed into a prime (101224421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229836 + ... + 230275.

It is an arithmetic number, because the mean of its divisors is an integer number (9662352).

Almost surely, 2^101224420 is an apocalyptic number.

101224420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101224420 is an abundant number, since it is smaller than the sum of its proper divisors (130672028).

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

101224420 is a wasteful number, since it uses less digits than its factorization.

101224420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460131 (or 460129 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 101224420 is about 10061.0347380376. The cubic root of 101224420 is about 466.0456217192.

Adding to 101224420 its reverse (24422101), we get a palindrome (125646521).

The spelling of 101224420 in words is "one hundred one million, two hundred twenty-four thousand, four hundred twenty".