1212000201191 has 4 divisors (see below), whose sum is σ = 1305230985912. Its totient is φ = 1118769416472.

The previous prime is 1212000201157. The next prime is 1212000201239. The reversal of 1212000201191 is 1911020002121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212000201191 - 2¹⁰ = 1212000200167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212000201131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46615392341 + ... + 46615392366.

It is an arithmetic number, because the mean of its divisors is an integer number (326307746478).

Almost surely, 2^{1212000201191} is an apocalyptic number.

1212000201191 is a deficient number, since it is larger than the sum of its proper divisors (93230784721).

1212000201191 is an equidigital number, since it uses as much as digits as its factorization.

1212000201191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93230784720.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 1212000201191 in words is "one trillion, two hundred twelve billion, two hundred one thousand, one hundred ninety-one".