10120222421 has 4 divisors (see below), whose sum is σ = 10121125344. Its totient is φ = 10119319500.

The previous prime is 10120222403. The next prime is 10120222439. The reversal of 10120222421 is 12422202101.

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: 12422202101 = 6689 ⋅1857109.

It is an interprime number because it is at equal distance from previous prime (10120222403) and next prime (10120222439).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10120222421 is a prime.

It is a super-2 number, since 2×10120222421² (a number of 21 digits) 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 10120222421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10120222471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434435 + ... + 457136.

It is an arithmetic number, because the mean of its divisors is an integer number (2530281336).

Almost surely, 2^10120222421 is an apocalyptic number.

It is an amenable number.

10120222421 is a deficient number, since it is larger than the sum of its proper divisors (902923).

10120222421 is an equidigital number, since it uses as much as digits as its factorization.

10120222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902922.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10120222421 its reverse (12422202101), we get a palindrome (22542424522).

The spelling of 10120222421 in words is "ten billion, one hundred twenty million, two hundred twenty-two thousand, four hundred twenty-one".