120251135311250 has 40 divisors (see below), whose sum is σ = 225400481741820. Its totient is φ = 48100079880000.

The previous prime is 120251135311247. The next prime is 120251135311253. The reversal of 120251135311250 is 52113531152021.

It is an interprime number because it is at equal distance from previous prime (120251135311247) and next prime (120251135311253).

It can be written as a sum of positive squares in 10 ways, for example, as 1888681249849 + 118362454061401 = 1374293^2 + 10879451^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120251135311253) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 205734416 + ... + 206318084.

Almost surely, 2^{120251135311250} is an apocalyptic number.

120251135311250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120251135311250 is a deficient number, since it is larger than the sum of its proper divisors (105149346430570).

120251135311250 is an equidigital number, since it uses as much as digits as its factorization.

120251135311250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748512 (or 748497 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 32.

Adding to 120251135311250 its reverse (52113531152021), we get a palindrome (172364666463271).

The spelling of 120251135311250 in words is "one hundred twenty trillion, two hundred fifty-one billion, one hundred thirty-five million, three hundred eleven thousand, two hundred fifty".