121220102 has 8 divisors (see below), whose sum is σ = 184912200. Its totient is φ = 59582704.

The previous prime is 121220101. The next prime is 121220107. The reversal of 121220102 is 201022121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220101) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 513527 + ... + 513762.

It is an arithmetic number, because the mean of its divisors is an integer number (23114025).

Almost surely, 2^121220102 is an apocalyptic number.

121220102 is a deficient number, since it is larger than the sum of its proper divisors (63692098).

121220102 is a wasteful number, since it uses less digits than its factorization.

121220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027350.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121220102 is about 11010.0000908265. Note that the first 4 decimals coincide. The cubic root of 121220102 is about 494.9084645218.

Adding to 121220102 its reverse (201022121), we get a palindrome (322242223).

The spelling of 121220102 in words is "one hundred twenty-one million, two hundred twenty thousand, one hundred two".