510100212121 has 4 divisors (see below), whose sum is σ = 510417637632. Its totient is φ = 509782786612.

The previous prime is 510100212107. The next prime is 510100212197. The reversal of 510100212121 is 121212001015.

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 a cyclic number.

It is not a de Polignac number, because 510100212121 - 2¹⁹ = 510099687833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 510100212095 and 510100212104.

It is not an unprimeable number, because it can be changed into a prime (510100212421) 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, 158710345 + ... + 158713558.

It is an arithmetic number, because the mean of its divisors is an integer number (127604409408).

Almost surely, 2^510100212121 is an apocalyptic number.

It is an amenable number.

510100212121 is a deficient number, since it is larger than the sum of its proper divisors (317425511).

510100212121 is a wasteful number, since it uses less digits than its factorization.

510100212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317425510.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 510100212121 its reverse (121212001015), we get a palindrome (631312213136).

The spelling of 510100212121 in words is "five hundred ten billion, one hundred million, two hundred twelve thousand, one hundred twenty-one".