102121302043 has 4 divisors (see below), whose sum is σ = 104496216088. Its totient is φ = 99746388000.

The previous prime is 102121302037. The next prime is 102121302047. The reversal of 102121302043 is 340203121201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 340203121201 = 55541 ⋅6125261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102121302043 is a prime.

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 102121302043.

It is not an unprimeable number, because it can be changed into a prime (102121302047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1187456958 + ... + 1187457043.

It is an arithmetic number, because the mean of its divisors is an integer number (26124054022).

Almost surely, 2^102121302043 is an apocalyptic number.

102121302043 is a deficient number, since it is larger than the sum of its proper divisors (2374914045).

102121302043 is an equidigital number, since it uses as much as digits as its factorization.

102121302043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374914044.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102121302043 its reverse (340203121201), we get a palindrome (442324423244).

The spelling of 102121302043 in words is "one hundred two billion, one hundred twenty-one million, three hundred two thousand, forty-three".