1216264017250 has 16 divisors (see below), whose sum is σ = 2276846240760. Its totient is φ = 486505606800.

The previous prime is 1216264017239. The next prime is 1216264017337. The reversal of 1216264017250 is 527104626121.

It can be written as a sum of positive squares in 4 ways, for example, as 624332281609 + 591931735641 = 790147^2 + 769371^2 .

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, 2432527785 + ... + 2432528284.

Almost surely, 2^{1216264017250} is an apocalyptic number.

1216264017250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216264017250 is a deficient number, since it is larger than the sum of its proper divisors (1060582223510).

1216264017250 is an equidigital number, since it uses as much as digits as its factorization.

1216264017250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865056086 (or 4865056076 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 1216264017250 in words is "one trillion, two hundred sixteen billion, two hundred sixty-four million, seventeen thousand, two hundred fifty".