1299211903000 has 128 divisors (see below), whose sum is σ = 3318754083840. Its totient is φ = 472124400000.

The previous prime is 1299211902953. The next prime is 1299211903037. The reversal of 1299211903000 is 3091129921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16714225 + ... + 16791775.

It is an arithmetic number, because the mean of its divisors is an integer number (25927766280).

Almost surely, 2^{1299211903000} is an apocalyptic number.

1299211903000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299211903000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659377041920).

1299211903000 is an abundant number, since it is smaller than the sum of its proper divisors (2019542180840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299211903000 is a wasteful number, since it uses less digits than its factorization.

1299211903000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79106 (or 79092 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 37.

The spelling of 1299211903000 in words is "one trillion, two hundred ninety-nine billion, two hundred eleven million, nine hundred three thousand".