121111111020202 has 16 divisors (see below), whose sum is σ = 185537385948672. Its totient is φ = 59265391692880.

The previous prime is 121111111020187. The next prime is 121111111020227. The reversal of 121111111020202 is 202020111111121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15789778 + ... + 22170685.

It is an arithmetic number, because the mean of its divisors is an integer number (11596086621792).

Almost surely, 2^{121111111020202} is an apocalyptic number.

121111111020202 is a deficient number, since it is larger than the sum of its proper divisors (64426274928470).

121111111020202 is a wasteful number, since it uses less digits than its factorization.

121111111020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37994453.

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

Adding to 121111111020202 its reverse (202020111111121), we get a palindrome (323131222131323).

The spelling of 121111111020202 in words is "one hundred twenty-one trillion, one hundred eleven billion, one hundred eleven million, twenty thousand, two hundred two".