2121775070 has 32 divisors (see below), whose sum is σ = 4006195200. Its totient is φ = 807542560.

The previous prime is 2121775069. The next prime is 2121775079. The reversal of 2121775070 is 705771212.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121775079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19781 + ... + 68079.

It is an arithmetic number, because the mean of its divisors is an integer number (125193600).

Almost surely, 2^2121775070 is an apocalyptic number.

2121775070 is a deficient number, since it is larger than the sum of its proper divisors (1884420130).

2121775070 is a wasteful number, since it uses less digits than its factorization.

2121775070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48520.

The product of its (nonzero) digits is 6860, while the sum is 32.

The square root of 2121775070 is about 46062.7297280567. The cubic root of 2121775070 is about 1284.9900971747.

The spelling of 2121775070 in words is "two billion, one hundred twenty-one million, seven hundred seventy-five thousand, seventy".