101212224125 has 8 divisors (see below), whose sum is σ = 126312855864. Its totient is φ = 80969779200.

The previous prime is 101212224067. The next prime is 101212224149. The reversal of 101212224125 is 521422212101.

It can be written as a sum of positive squares in 4 ways, for example, as 1126676356 + 100085547769 = 33566^2 + 316363^2 .

It is not a de Polignac number, because 101212224125 - 2¹² = 101212220029 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101212224125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404848772 + ... + 404849021.

It is an arithmetic number, because the mean of its divisors is an integer number (15789106983).

Almost surely, 2^101212224125 is an apocalyptic number.

It is an amenable number.

101212224125 is a deficient number, since it is larger than the sum of its proper divisors (25100631739).

101212224125 is an frugal number, since it uses more digits than its factorization.

101212224125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809697808 (or 809697798 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 101212224125 its reverse (521422212101), we get a palindrome (622634436226).

The spelling of 101212224125 in words is "one hundred one billion, two hundred twelve million, two hundred twenty-four thousand, one hundred twenty-five".