10220121243 has 8 divisors (see below), whose sum is σ = 15140920400. Its totient is φ = 6813414144.

The previous prime is 10220121227. The next prime is 10220121259. The reversal of 10220121243 is 34212102201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10220121227) and next prime (10220121259).

It is not a de Polignac number, because 10220121243 - 2⁴ = 10220121227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10220121293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189261478 + ... + 189261531.

It is an arithmetic number, because the mean of its divisors is an integer number (1892615050).

Almost surely, 2^10220121243 is an apocalyptic number.

10220121243 is a deficient number, since it is larger than the sum of its proper divisors (4920799157).

10220121243 is an equidigital number, since it uses as much as digits as its factorization.

10220121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378523018 (or 378523012 counting only the distinct ones).

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

Adding to 10220121243 its reverse (34212102201), we get a palindrome (44432223444).

The spelling of 10220121243 in words is "ten billion, two hundred twenty million, one hundred twenty-one thousand, two hundred forty-three".