10120221243 has 24 divisors (see below), whose sum is σ = 16537649856. Its totient is φ = 6133465800.

The previous prime is 10120221229. The next prime is 10120221247. The reversal of 10120221243 is 34212202101.

It is a happy number.

It is not a de Polignac number, because 10120221243 - 2⁸ = 10120220987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10120221247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1890373 + ... + 1895718.

It is an arithmetic number, because the mean of its divisors is an integer number (689068744).

Almost surely, 2^10120221243 is an apocalyptic number.

10120221243 is a deficient number, since it is larger than the sum of its proper divisors (6417428613).

10120221243 is an equidigital number, since it uses as much as digits as its factorization.

10120221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3786117 (or 3786105 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 10120221243 its reverse (34212202101), we get a palindrome (44332423344).

The spelling of 10120221243 in words is "ten billion, one hundred twenty million, two hundred twenty-one thousand, two hundred forty-three".