20102241243 has 32 divisors (see below), whose sum is σ = 34140925440. Its totient is φ = 10242270720.

The previous prime is 20102241241. The next prime is 20102241251. The reversal of 20102241243 is 34214220102.

It is not a de Polignac number, because 20102241243 - 2¹ = 20102241241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (20102241241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1475028 + ... + 1488593.

It is an arithmetic number, because the mean of its divisors is an integer number (1066903920).

Almost surely, 2^20102241243 is an apocalyptic number.

20102241243 is a deficient number, since it is larger than the sum of its proper divisors (14038684197).

20102241243 is a wasteful number, since it uses less digits than its factorization.

20102241243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963667.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 20102241243 its reverse (34214220102), we get a palindrome (54316461345).

The spelling of 20102241243 in words is "twenty billion, one hundred two million, two hundred forty-one thousand, two hundred forty-three".