1200211011000 has 96 divisors (see below), whose sum is σ = 4056713247600. Its totient is φ = 320056267200.

The previous prime is 1200211010899. The next prime is 1200211011007. The reversal of 1200211011000 is 1101120021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200211011007) 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, 66669390 + ... + 66687389.

Almost surely, 2^{1200211011000} is an apocalyptic number.

1200211011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200211011000 is an abundant number, since it is smaller than the sum of its proper divisors (2856502236600).

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

1200211011000 is a wasteful number, since it uses less digits than its factorization.

1200211011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133356806 (or 133356789 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200211011000 its reverse (1101120021), we get a palindrome (1201312131021).

The spelling of 1200211011000 in words is "one trillion, two hundred billion, two hundred eleven million, eleven thousand".