2123656701 has 8 divisors (see below), whose sum is σ = 2857520160. Its totient is φ = 1402782192.

The previous prime is 2123656693. The next prime is 2123656709. The reversal of 2123656701 is 1076563212.

It is an interprime number because it is at equal distance from previous prime (2123656693) and next prime (2123656709).

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

It is not a de Polignac number, because 2123656701 - 2³ = 2123656693 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123656709) 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, 3246855 + ... + 3247508.

It is an arithmetic number, because the mean of its divisors is an integer number (357190020).

Almost surely, 2^2123656701 is an apocalyptic number.

It is an amenable number.

2123656701 is a deficient number, since it is larger than the sum of its proper divisors (733863459).

2123656701 is a wasteful number, since it uses less digits than its factorization.

2123656701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6494475.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2123656701 is about 46083.1498597915. The cubic root of 2123656701 is about 1285.3698362664.

The spelling of 2123656701 in words is "two billion, one hundred twenty-three million, six hundred fifty-six thousand, seven hundred one".