6201212161 has 4 divisors (see below), whose sum is σ = 6237057492. Its totient is φ = 6165366832.

The previous prime is 6201212123. The next prime is 6201212167. The reversal of 6201212161 is 1612121026.

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 2179115761 + 4022096400 = 46681^2 + 63420^2 .

It is a cyclic number.

It is not a de Polignac number, because 6201212161 - 2¹³ = 6201203969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6201212167) 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, 17922406 + ... + 17922751.

It is an arithmetic number, because the mean of its divisors is an integer number (1559264373).

Almost surely, 2^6201212161 is an apocalyptic number.

It is an amenable number.

6201212161 is a deficient number, since it is larger than the sum of its proper divisors (35845331).

6201212161 is a wasteful number, since it uses less digits than its factorization.

6201212161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35845330.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 6201212161 is about 78747.7755939811. The cubic root of 6201212161 is about 1837.2102653051.

Adding to 6201212161 its reverse (1612121026), we get a palindrome (7813333187).

The spelling of 6201212161 in words is "six billion, two hundred one million, two hundred twelve thousand, one hundred sixty-one".