2161121048 has 8 divisors (see below), whose sum is σ = 4052101980. Its totient is φ = 1080560520.

The previous prime is 2161121033. The next prime is 2161121059. The reversal of 2161121048 is 8401211612.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135070058 + ... + 135070073.

Almost surely, 2^2161121048 is an apocalyptic number.

It is an amenable number.

2161121048 is a deficient number, since it is larger than the sum of its proper divisors (1890980932).

2161121048 is a wasteful number, since it uses less digits than its factorization.

2161121048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270140137 (or 270140133 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 2161121048 is about 46487.8591462330. The cubic root of 2161121048 is about 1292.8844072584.

The spelling of 2161121048 in words is "two billion, one hundred sixty-one million, one hundred twenty-one thousand, forty-eight".