121213102 has 4 divisors (see below), whose sum is σ = 181819656. Its totient is φ = 60606550.

The previous prime is 121213063. The next prime is 121213129. The reversal of 121213102 is 201312121.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 30303274 + ... + 30303277.

It is an arithmetic number, because the mean of its divisors is an integer number (45454914).

Almost surely, 2^121213102 is an apocalyptic number.

121213102 is a deficient number, since it is larger than the sum of its proper divisors (60606554).

121213102 is an equidigital number, since it uses as much as digits as its factorization.

121213102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60606553.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121213102 is about 11009.6821934150. The cubic root of 121213102 is about 494.8989379777.

Adding to 121213102 its reverse (201312121), we get a palindrome (322525223).

The spelling of 121213102 in words is "one hundred twenty-one million, two hundred thirteen thousand, one hundred two".