5212002121 has 4 divisors (see below), whose sum is σ = 5300341200. Its totient is φ = 5123663044.

The previous prime is 5212002109. The next prime is 5212002127. The reversal of 5212002121 is 1212002125.

It is a happy number.

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 5212002121 - 2¹³ = 5211993929 is a prime.

It is a super-2 number, since 2×5212002121² = 54329932218616997282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5212002095 and 5212002104.

It is not an unprimeable number, because it can be changed into a prime (5212002127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44169451 + ... + 44169568.

It is an arithmetic number, because the mean of its divisors is an integer number (1325085300).

Almost surely, 2^5212002121 is an apocalyptic number.

It is an amenable number.

5212002121 is a deficient number, since it is larger than the sum of its proper divisors (88339079).

5212002121 is an equidigital number, since it uses as much as digits as its factorization.

5212002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88339078.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 5212002121 is about 72194.1972806679. The cubic root of 5212002121 is about 1733.8100975944.

Adding to 5212002121 its reverse (1212002125), we get a palindrome (6424004246).

The spelling of 5212002121 in words is "five billion, two hundred twelve million, two thousand, one hundred twenty-one".