10020102121 has 4 divisors (see below), whose sum is σ = 10169655952. Its totient is φ = 9870548292.

The previous prime is 10020102119. The next prime is 10020102149. The reversal of 10020102121 is 12120102001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12120102001 = 7 ⋅1731443143.

It is a cyclic number.

It is not a de Polignac number, because 10020102121 - 2¹ = 10020102119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020102098 and 10020102107.

It is not an unprimeable number, because it can be changed into a prime (10020102151) 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, 74776815 + ... + 74776948.

It is an arithmetic number, because the mean of its divisors is an integer number (2542413988).

Almost surely, 2^10020102121 is an apocalyptic number.

It is an amenable number.

10020102121 is a deficient number, since it is larger than the sum of its proper divisors (149553831).

10020102121 is an equidigital number, since it uses as much as digits as its factorization.

10020102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149553830.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10020102121 its reverse (12120102001), we get a palindrome (22140204122).

The spelling of 10020102121 in words is "ten billion, twenty million, one hundred two thousand, one hundred twenty-one".