211972092148097 has 4 divisors (see below), whose sum is σ = 212200264476420. Its totient is φ = 211743919819776.

The previous prime is 211972092148081. The next prime is 211972092148213. The reversal of 211972092148097 is 790841290279112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16768050404161 + 195204041743936 = 4094881^2 + 13971544^2 .

It is a cyclic number.

It is not a de Polignac number, because 211972092148097 - 2⁴ = 211972092148081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211972092148067) 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, 114086162768 + ... + 114086164625.

It is an arithmetic number, because the mean of its divisors is an integer number (53050066119105).

Almost surely, 2^{211972092148097} is an apocalyptic number.

It is an amenable number.

211972092148097 is a deficient number, since it is larger than the sum of its proper divisors (228172328323).

211972092148097 is an equidigital number, since it uses as much as digits as its factorization.

211972092148097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228172328322.

The product of its (nonzero) digits is 9144576, while the sum is 62.

The spelling of 211972092148097 in words is "two hundred eleven trillion, nine hundred seventy-two billion, ninety-two million, one hundred forty-eight thousand, ninety-seven".