1212111002 has 4 divisors (see below), whose sum is σ = 1818166506. Its totient is φ = 606055500.

The previous prime is 1212110989. The next prime is 1212111037. The reversal of 1212111002 is 2001112121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 973377601 + 238733401 = 31199^2 + 15451^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303027749 + ... + 303027752.

Almost surely, 2^1212111002 is an apocalyptic number.

1212111002 is a deficient number, since it is larger than the sum of its proper divisors (606055504).

1212111002 is an equidigital number, since it uses as much as digits as its factorization.

1212111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606055503.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1212111002 is about 34815.3845591285. The cubic root of 1212111002 is about 1066.2215705255.

Adding to 1212111002 its reverse (2001112121), we get a palindrome (3213223123).

The spelling of 1212111002 in words is "one billion, two hundred twelve million, one hundred eleven thousand, two".