1251102152 has 8 divisors (see below), whose sum is σ = 2345816550. Its totient is φ = 625551072.

The previous prime is 1251102133. The next prime is 1251102163. The reversal of 1251102152 is 2512011521.

It can be written as a sum of positive squares in only one way, i.e., 1249905316 + 1196836 = 35354^2 + 1094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1251102152² = 3130513189478062208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78193877 + ... + 78193892.

Almost surely, 2^1251102152 is an apocalyptic number.

It is an amenable number.

1251102152 is a deficient number, since it is larger than the sum of its proper divisors (1094714398).

1251102152 is a wasteful number, since it uses less digits than its factorization.

1251102152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156387775 (or 156387771 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 1251102152 is about 35370.9224081024. The cubic root of 1251102152 is about 1077.5338539436.

Adding to 1251102152 its reverse (2512011521), we get a palindrome (3763113673).

The spelling of 1251102152 in words is "one billion, two hundred fifty-one million, one hundred two thousand, one hundred fifty-two".