1212321002 has 4 divisors (see below), whose sum is σ = 1818481506. Its totient is φ = 606160500.

The previous prime is 1212320987. The next prime is 1212321013. The reversal of 1212321002 is 2001232121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2001232121 = 7 ⋅285890303.

It can be written as a sum of positive squares in only one way, i.e., 1198475161 + 13845841 = 34619^2 + 3721^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303080249 + ... + 303080252.

Almost surely, 2^1212321002 is an apocalyptic number.

1212321002 is a deficient number, since it is larger than the sum of its proper divisors (606160504).

1212321002 is an equidigital number, since it uses as much as digits as its factorization.

1212321002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606160503.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1212321002 is about 34818.4003366036. The cubic root of 1212321002 is about 1066.2831417842.

Adding to 1212321002 its reverse (2001232121), we get a palindrome (3213553123).

The spelling of 1212321002 in words is "one billion, two hundred twelve million, three hundred twenty-one thousand, two".