10012021442 has 4 divisors (see below), whose sum is σ = 15018032166. Its totient is φ = 5006010720.

The previous prime is 10012021441. The next prime is 10012021493. The reversal of 10012021442 is 24412021001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24412021001 = 919 ⋅26563679.

It can be written as a sum of positive squares in only one way, i.e., 7940770321 + 2071251121 = 89111^2 + 45511^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 10012021442.

It is not an unprimeable number, because it can be changed into a prime (10012021441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2503005359 + ... + 2503005362.

Almost surely, 2^10012021442 is an apocalyptic number.

10012021442 is a deficient number, since it is larger than the sum of its proper divisors (5006010724).

10012021442 is an equidigital number, since it uses as much as digits as its factorization.

10012021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006010723.

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

Adding to 10012021442 its reverse (24412021001), we get a palindrome (34424042443).

The spelling of 10012021442 in words is "ten billion, twelve million, twenty-one thousand, four hundred forty-two".