252151220111 has 16 divisors (see below), whose sum is σ = 298152368640. Its totient is φ = 208647085920.

The previous prime is 252151220071. The next prime is 252151220129. The reversal of 252151220111 is 111022151252.

It is not a de Polignac number, because 252151220111 - 2²⁶ = 252084111247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252151220141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398326 + ... + 1568316.

It is an arithmetic number, because the mean of its divisors is an integer number (18634523040).

Almost surely, 2^252151220111 is an apocalyptic number.

252151220111 is a deficient number, since it is larger than the sum of its proper divisors (46001148529).

252151220111 is a wasteful number, since it uses less digits than its factorization.

252151220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177334.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 252151220111 its reverse (111022151252), we get a palindrome (363173371363).

The spelling of 252151220111 in words is "two hundred fifty-two billion, one hundred fifty-one million, two hundred twenty thousand, one hundred eleven".