100112621 has 4 divisors (see below), whose sum is σ = 114414432. Its totient is φ = 85810812.

The previous prime is 100112599. The next prime is 100112657. The reversal of 100112621 is 126211001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 126211001 = 7 ⋅18030143.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100112621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100112596 and 100112605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7150895 + ... + 7150908.

It is an arithmetic number, because the mean of its divisors is an integer number (28603608).

Almost surely, 2^100112621 is an apocalyptic number.

It is an amenable number.

100112621 is a deficient number, since it is larger than the sum of its proper divisors (14301811).

100112621 is an equidigital number, since it uses as much as digits as its factorization.

100112621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14301810.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 100112621 is about 10005.6294654559. The cubic root of 100112621 is about 464.3330647814. Note that the first 3 decimals are identical.

Adding to 100112621 its reverse (126211001), we get a palindrome (226323622).

It can be divided in two parts, 1001 and 12621, that multiplied together give a palindrome (12633621).

The spelling of 100112621 in words is "one hundred million, one hundred twelve thousand, six hundred twenty-one".