2072682121 has 4 divisors (see below), whose sum is σ = 2073524752. Its totient is φ = 2071839492.

The previous prime is 2072682119. The next prime is 2072682137. The reversal of 2072682121 is 1212862702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2072682121 - 2¹ = 2072682119 is a prime.

It is a super-2 number, since 2×2072682121² = 8592022349426117282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2072689121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417615 + ... + 422548.

It is an arithmetic number, because the mean of its divisors is an integer number (518381188).

Almost surely, 2^2072682121 is an apocalyptic number.

It is an amenable number.

2072682121 is a deficient number, since it is larger than the sum of its proper divisors (842631).

2072682121 is an equidigital number, since it uses as much as digits as its factorization.

2072682121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842630.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 2072682121 is about 45526.7187594274. The cubic root of 2072682121 is about 1275.0021009321.

The spelling of 2072682121 in words is "two billion, seventy-two million, six hundred eighty-two thousand, one hundred twenty-one".