1212210000191 has 16 divisors (see below), whose sum is σ = 1299747271680. Its totient is φ = 1127801099040.

The previous prime is 1212210000119. The next prime is 1212210000259. The reversal of 1212210000191 is 1910000122121.

It is a cyclic number.

It is not a de Polignac number, because 1212210000191 - 2²⁶ = 1212142891327 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 (1212210000791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2327840 + ... + 2800581.

It is an arithmetic number, because the mean of its divisors is an integer number (81234204480).

Almost surely, 2^{1212210000191} is an apocalyptic number.

1212210000191 is a deficient number, since it is larger than the sum of its proper divisors (87537271489).

1212210000191 is a wasteful number, since it uses less digits than its factorization.

1212210000191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128726.

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

The spelling of 1212210000191 in words is "one trillion, two hundred twelve billion, two hundred ten million, one hundred ninety-one", and thus it is an aban number.