1011321211300 has 72 divisors (see below), whose sum is σ = 2223521435520. Its totient is φ = 399217392000.

The previous prime is 1011321211259. The next prime is 1011321211321. The reversal of 1011321211300 is 31121231101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2937621 + ... + 3263779.

It is an arithmetic number, because the mean of its divisors is an integer number (30882242160).

Almost surely, 2^{1011321211300} is an apocalyptic number.

1011321211300 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 1011321211300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1111760717760).

1011321211300 is an abundant number, since it is smaller than the sum of its proper divisors (1212200224220).

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

1011321211300 is a wasteful number, since it uses less digits than its factorization.

1011321211300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326581 (or 326574 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011321211300 its reverse (31121231101), we get a palindrome (1042442442401).

The spelling of 1011321211300 in words is "one trillion, eleven billion, three hundred twenty-one million, two hundred eleven thousand, three hundred".