52021221051 has 8 divisors (see below), whose sum is σ = 70239623680. Its totient is φ = 34241816232.

The previous prime is 52021221013. The next prime is 52021221067. The reversal of 52021221051 is 15012212025.

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

It is not a de Polignac number, because 52021221051 - 2⁶ = 52021220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52021221001) 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, 109749175 + ... + 109749648.

It is an arithmetic number, because the mean of its divisors is an integer number (8779952960).

Almost surely, 2^52021221051 is an apocalyptic number.

52021221051 is a deficient number, since it is larger than the sum of its proper divisors (18218402629).

52021221051 is a wasteful number, since it uses less digits than its factorization.

52021221051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219498905.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 52021221051 its reverse (15012212025), we get a palindrome (67033433076).

The spelling of 52021221051 in words is "fifty-two billion, twenty-one million, two hundred twenty-one thousand, fifty-one".