1212120993 has 8 divisors (see below), whose sum is σ = 1634320800. Its totient is φ = 799000928.

The previous prime is 1212120991. The next prime is 1212121037. The reversal of 1212120993 is 3990212121.

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

It is a cyclic number.

It is not a de Polignac number, because 1212120993 - 2¹ = 1212120991 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212120993.

It is not an unprimeable number, because it can be changed into a prime (1212120991) 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, 2269623 + ... + 2270156.

It is an arithmetic number, because the mean of its divisors is an integer number (204290100).

Almost surely, 2^1212120993 is an apocalyptic number.

It is an amenable number.

1212120993 is a deficient number, since it is larger than the sum of its proper divisors (422199807).

1212120993 is an equidigital number, since it uses as much as digits as its factorization.

1212120993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539871.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1212120993 is about 34815.5280442506. The cubic root of 1212120993 is about 1066.2245000125.

The spelling of 1212120993 in words is "one billion, two hundred twelve million, one hundred twenty thousand, nine hundred ninety-three".