1290228521499 has 24 divisors (see below), whose sum is σ = 1932862359792. Its totient is φ = 860074744320.

The previous prime is 1290228521399. The next prime is 1290228521503. The reversal of 1290228521499 is 9941258220921.

1290228521499 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 2 + 28 + 521 + 4 + 99 = 666.

It is not a de Polignac number, because 1290228521499 - 2⁷ = 1290228521371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290228521399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2524939 + ... + 2992619.

It is an arithmetic number, because the mean of its divisors is an integer number (80535931658).

Almost surely, 2^{1290228521499} is an apocalyptic number.

1290228521499 is a deficient number, since it is larger than the sum of its proper divisors (642633838293).

1290228521499 is an equidigital number, since it uses as much as digits as its factorization.

1290228521499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479049 (or 479037 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The spelling of 1290228521499 in words is "one trillion, two hundred ninety billion, two hundred twenty-eight million, five hundred twenty-one thousand, four hundred ninety-nine".