10102020121 has 8 divisors (see below), whose sum is σ = 10229677920. Its totient is φ = 9974978208.

The previous prime is 10102020119. The next prime is 10102020151. The reversal of 10102020121 is 12102020101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10102020121 - 2¹ = 10102020119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10102020098 and 10102020107.

It is not an unprimeable number, because it can be changed into a prime (10102020151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120916 + ... + 186613.

It is an arithmetic number, because the mean of its divisors is an integer number (1278709740).

Almost surely, 2^10102020121 is an apocalyptic number.

It is an amenable number.

10102020121 is a deficient number, since it is larger than the sum of its proper divisors (127657799).

10102020121 is a wasteful number, since it uses less digits than its factorization.

10102020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307943.

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

Adding to 10102020121 its reverse (12102020101), we get a palindrome (22204040222).

The spelling of 10102020121 in words is "ten billion, one hundred two million, twenty thousand, one hundred twenty-one".