102820123220041 has 4 divisors (see below), whose sum is σ = 102853088956800. Its totient is φ = 102787157483284.

The previous prime is 102820123220029. The next prime is 102820123220053. The reversal of 102820123220041 is 140022321028201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (102820123220029) and next prime (102820123220053).

It is a cyclic number.

It is not a de Polignac number, because 102820123220041 - 2¹⁵ = 102820123187273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102820123219991 and 102820123220009.

It is not an unprimeable number, because it can be changed into a prime (102820123220011) 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, 16482863701 + ... + 16482869938.

It is an arithmetic number, because the mean of its divisors is an integer number (25713272239200).

Almost surely, 2^{102820123220041} is an apocalyptic number.

It is an amenable number.

102820123220041 is a deficient number, since it is larger than the sum of its proper divisors (32965736759).

102820123220041 is an equidigital number, since it uses as much as digits as its factorization.

102820123220041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32965736758.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 102820123220041 its reverse (140022321028201), we get a palindrome (242842444248242).

The spelling of 102820123220041 in words is "one hundred two trillion, eight hundred twenty billion, one hundred twenty-three million, two hundred twenty thousand, forty-one".