1200001111010 has 48 divisors (see below), whose sum is σ = 2340755862120. Its totient is φ = 442732792320.

The previous prime is 1200001111003. The next prime is 1200001111061. The reversal of 1200001111010 is 101111000021.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 27200915329 + 1172800195681 = 164927^2 + 1082959^2 .

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, 1902980 + ... + 2453840.

Almost surely, 2^{1200001111010} is an apocalyptic number.

1200001111010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1200001111010 is a deficient number, since it is larger than the sum of its proper divisors (1140754751110).

1200001111010 is a wasteful number, since it uses less digits than its factorization.

1200001111010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552183 (or 552170 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1200001111010 its reverse (101111000021), we get a palindrome (1301112111031).

It can be divided in two parts, 12000011 and 11010, that added together give a palindrome (12011021).

The spelling of 1200001111010 in words is "one trillion, two hundred billion, one million, one hundred eleven thousand, ten".