212211100191 has 32 divisors (see below), whose sum is σ = 293035503616. Its totient is φ = 136461024000.

The previous prime is 212211100163. The next prime is 212211100193. The reversal of 212211100191 is 191001112212.

It is not a de Polignac number, because 212211100191 - 2¹⁹ = 212210575903 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 (212211100193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64874886 + ... + 64878156.

It is an arithmetic number, because the mean of its divisors is an integer number (9157359488).

Almost surely, 2^212211100191 is an apocalyptic number.

212211100191 is a deficient number, since it is larger than the sum of its proper divisors (80824403425).

212211100191 is a wasteful number, since it uses less digits than its factorization.

212211100191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5383.

The product of its (nonzero) digits is 72, while the sum is 21.

The spelling of 212211100191 in words is "two hundred twelve billion, two hundred eleven million, one hundred thousand, one hundred ninety-one".