5211772121 has 8 divisors (see below), whose sum is σ = 5279817600. Its totient is φ = 5143778640.

The previous prime is 5211772109. The next prime is 5211772169. The reversal of 5211772121 is 1212771125.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5211772121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5211772171) 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 7 ways as a sum of consecutive naturals, for example, 214490 + ... + 237548.

It is an arithmetic number, because the mean of its divisors is an integer number (659977200).

Almost surely, 2^5211772121 is an apocalyptic number.

It is an amenable number.

5211772121 is a deficient number, since it is larger than the sum of its proper divisors (68045479).

5211772121 is a wasteful number, since it uses less digits than its factorization.

5211772121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25999.

The product of its digits is 1960, while the sum is 29.

The square root of 5211772121 is about 72192.6043372865. The cubic root of 5211772121 is about 1733.7845934996.

The spelling of 5211772121 in words is "five billion, two hundred eleven million, seven hundred seventy-two thousand, one hundred twenty-one".