167211021101 has 4 divisors (see below), whose sum is σ = 167224203132. Its totient is φ = 167197839072.

The previous prime is 167211021059. The next prime is 167211021127. The reversal of 167211021101 is 101120112761.

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 100806885001 + 66404136100 = 317501^2 + 257690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-167211021101 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 (167211021001) 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, 6571970 + ... + 6597363.

It is an arithmetic number, because the mean of its divisors is an integer number (41806050783).

Almost surely, 2^167211021101 is an apocalyptic number.

It is an amenable number.

167211021101 is a deficient number, since it is larger than the sum of its proper divisors (13182031).

167211021101 is a wasteful number, since it uses less digits than its factorization.

167211021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13182030.

The product of its (nonzero) digits is 168, while the sum is 23.

Adding to 167211021101 its reverse (101120112761), we get a palindrome (268331133862).

The spelling of 167211021101 in words is "one hundred sixty-seven billion, two hundred eleven million, twenty-one thousand, one hundred one".