1973221123 has 2 divisors, whose sum is σ = 1973221124. Its totient is φ = 1973221122.

The previous prime is 1973221091. The next prime is 1973221141. The reversal of 1973221123 is 3211223791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1973221123 - 2⁵ = 1973221091 is a prime.

It is a super-2 number, since 2×1973221123² = 7787203200506762258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1973221153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986610561 + 986610562.

It is an arithmetic number, because the mean of its divisors is an integer number (986610562).

Almost surely, 2^1973221123 is an apocalyptic number.

1973221123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973221123 is an equidigital number, since it uses as much as digits as its factorization.

1973221123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 1973221123 is about 44420.9536480252. The cubic root of 1973221123 is about 1254.2725525040.

The spelling of 1973221123 in words is "one billion, nine hundred seventy-three million, two hundred twenty-one thousand, one hundred twenty-three".