2162126261 has 8 divisors (see below), whose sum is σ = 2278072800. Its totient is φ = 2046394800.

The previous prime is 2162126257. The next prime is 2162126297. The reversal of 2162126261 is 1626212612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2162126261 - 2² = 2162126257 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 (2162126221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32915 + ... + 73536.

It is an arithmetic number, because the mean of its divisors is an integer number (284759100).

Almost surely, 2^2162126261 is an apocalyptic number.

It is an amenable number.

2162126261 is a deficient number, since it is larger than the sum of its proper divisors (115946539).

2162126261 is a wasteful number, since it uses less digits than its factorization.

2162126261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107539.

The product of its digits is 3456, while the sum is 29.

The square root of 2162126261 is about 46498.6694540822. The cubic root of 2162126261 is about 1293.0848314420.

Adding to 2162126261 its reverse (1626212612), we get a palindrome (3788338873).

The spelling of 2162126261 in words is "two billion, one hundred sixty-two million, one hundred twenty-six thousand, two hundred sixty-one".