102120020220121 has 16 divisors (see below), whose sum is σ = 105408459170560. Its totient is φ = 98896737663360.

The previous prime is 102120020220083. The next prime is 102120020220173. The reversal of 102120020220121 is 121022020021201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102120020220121 - 2¹⁷ = 102120020089049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120020220095 and 102120020220104.

It is not an unprimeable number, because it can be changed into a prime (102120020220191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47872335 + ... + 49959988.

It is an arithmetic number, because the mean of its divisors is an integer number (6588028698160).

Almost surely, 2^{102120020220121} is an apocalyptic number.

It is an amenable number.

102120020220121 is a deficient number, since it is larger than the sum of its proper divisors (3288438950439).

102120020220121 is an equidigital number, since it uses as much as digits as its factorization.

102120020220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97832656.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102120020220121 its reverse (121022020021201), we get a palindrome (223142040241322).

The spelling of 102120020220121 in words is "one hundred two trillion, one hundred twenty billion, twenty million, two hundred twenty thousand, one hundred twenty-one".