1012012251 has 8 divisors (see below), whose sum is σ = 1350261840. Its totient is φ = 674218752.

The previous prime is 1012012249. The next prime is 1012012273. The reversal of 1012012251 is 1522102101.

1012012251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1012012251 - 2¹ = 1012012249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1012012251.

It is not an unprimeable number, because it can be changed into a prime (1012012201) 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, 108810 + ... + 117743.

It is an arithmetic number, because the mean of its divisors is an integer number (168782730).

Almost surely, 2^1012012251 is an apocalyptic number.

1012012251 is a deficient number, since it is larger than the sum of its proper divisors (338249589).

1012012251 is a wasteful number, since it uses less digits than its factorization.

1012012251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228045.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1012012251 is about 31812.1399940337. The cubic root of 1012012251 is about 1003.9881571250.

Adding to 1012012251 its reverse (1522102101), we get a palindrome (2534114352).

The spelling of 1012012251 in words is "one billion, twelve million, twelve thousand, two hundred fifty-one".