1200121102 has 4 divisors (see below), whose sum is σ = 1800181656. Its totient is φ = 600060550.

The previous prime is 1200121093. The next prime is 1200121121. The reversal of 1200121102 is 2011210021.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300030274 + ... + 300030277.

It is an arithmetic number, because the mean of its divisors is an integer number (450045414).

Almost surely, 2^1200121102 is an apocalyptic number.

1200121102 is a deficient number, since it is larger than the sum of its proper divisors (600060554).

1200121102 is an equidigital number, since it uses as much as digits as its factorization.

1200121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600060553.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1200121102 is about 34642.7640640870. The cubic root of 1200121102 is about 1062.6943152241.

Adding to 1200121102 its reverse (2011210021), we get a palindrome (3211331123).

The spelling of 1200121102 in words is "one billion, two hundred million, one hundred twenty-one thousand, one hundred two".