1210219973 has 2 divisors, whose sum is σ = 1210219974. Its totient is φ = 1210219972.

The previous prime is 1210219951. The next prime is 1210220017. The reversal of 1210219973 is 3799120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1202563684 + 7656289 = 34678^2 + 2767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210219973 - 2²² = 1206025669 is a prime.

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 (1210219903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605109986 + 605109987.

It is an arithmetic number, because the mean of its divisors is an integer number (605109987).

Almost surely, 2^1210219973 is an apocalyptic number.

It is an amenable number.

1210219973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210219973 is an equidigital number, since it uses as much as digits as its factorization.

1210219973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 1210219973 is about 34788.2160077231. The cubic root of 1210219973 is about 1065.6668068817. Note that the first 3 decimals are identical.

The spelling of 1210219973 in words is "one billion, two hundred ten million, two hundred nineteen thousand, nine hundred seventy-three".