105022421 has 4 divisors (see below), whose sum is σ = 120025632. Its totient is φ = 90019212.

The previous prime is 105022397. The next prime is 105022429. The reversal of 105022421 is 124220501.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105022421 is a prime.

It is a super-2 number, since 2×105022421² = 22059417825402482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 105022421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105022429) 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, 7501595 + ... + 7501608.

It is an arithmetic number, because the mean of its divisors is an integer number (30006408).

Almost surely, 2^105022421 is an apocalyptic number.

It is an amenable number.

105022421 is a deficient number, since it is larger than the sum of its proper divisors (15003211).

105022421 is an equidigital number, since it uses as much as digits as its factorization.

105022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15003210.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 105022421 is about 10248.0447403395. The cubic root of 105022421 is about 471.8029751392.

Adding to 105022421 its reverse (124220501), we get a palindrome (229242922).

The spelling of 105022421 in words is "one hundred five million, twenty-two thousand, four hundred twenty-one".