1200010012091 has 16 divisors (see below), whose sum is σ = 1388852367360. Its totient is φ = 1025363616480.

The previous prime is 1200010012051. The next prime is 1200010012109. The reversal of 1200010012091 is 1902100100021.

It is a cyclic number.

It is not a de Polignac number, because 1200010012091 - 2¹⁸ = 1200009749947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200010012051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22578476 + ... + 22631561.

It is an arithmetic number, because the mean of its divisors is an integer number (86803272960).

Almost surely, 2^{1200010012091} is an apocalyptic number.

1200010012091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200010012091 is a deficient number, since it is larger than the sum of its proper divisors (188842355269).

1200010012091 is a wasteful number, since it uses less digits than its factorization.

1200010012091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45210194.

The product of its (nonzero) digits is 36, while the sum is 17.

The spelling of 1200010012091 in words is "one trillion, two hundred billion, ten million, twelve thousand, ninety-one".