120021212191 has 2 divisors, whose sum is σ = 120021212192. Its totient is φ = 120021212190.

The previous prime is 120021212177. The next prime is 120021212293. The reversal of 120021212191 is 191212120021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120021212191 - 2¹⁵ = 120021179423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120021212791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010606095 + 60010606096.

It is an arithmetic number, because the mean of its divisors is an integer number (60010606096).

Almost surely, 2^120021212191 is an apocalyptic number.

120021212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021212191 is an equidigital number, since it uses as much as digits as its factorization.

120021212191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 120021212191 in words is "one hundred twenty billion, twenty-one million, two hundred twelve thousand, one hundred ninety-one".