121102012 has 6 divisors (see below), whose sum is σ = 211928528. Its totient is φ = 60551004.

The previous prime is 121102001. The next prime is 121102013. The reversal of 121102012 is 210201121.

It is a self number, because there is not a number n which added to its sum of digits gives 121102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137748 + ... + 15137755.

Almost surely, 2^121102012 is an apocalyptic number.

It is an amenable number.

121102012 is a deficient number, since it is larger than the sum of its proper divisors (90826516).

121102012 is a wasteful number, since it uses less digits than its factorization.

121102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30275507 (or 30275505 counting only the distinct ones).

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

The square root of 121102012 is about 11004.6359321879. The cubic root of 121102012 is about 494.7477026016.

Adding to 121102012 its reverse (210201121), we get a palindrome (331303133).

The spelling of 121102012 in words is "one hundred twenty-one million, one hundred two thousand, twelve".