2047223021 has 2 divisors, whose sum is σ = 2047223022. Its totient is φ = 2047223020.

The previous prime is 2047222993. The next prime is 2047223051. The reversal of 2047223021 is 1203227402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1782021796 + 265201225 = 42214^2 + 16285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2047223021 - 2¹⁰ = 2047221997 is a prime.

It is a super-2 number, since 2×2047223021² = 8382244195424732882, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2047223051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1023611510 + 1023611511.

It is an arithmetic number, because the mean of its divisors is an integer number (1023611511).

Almost surely, 2^2047223021 is an apocalyptic number.

It is an amenable number.

2047223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2047223021 is an equidigital number, since it uses as much as digits as its factorization.

2047223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 2047223021 is about 45246.2486953338. The cubic root of 2047223021 is about 1269.7602252608.

The spelling of 2047223021 in words is "two billion, forty-seven million, two hundred twenty-three thousand, twenty-one".