121202102122 has 16 divisors (see below), whose sum is σ = 190171500480. Its totient is φ = 57824487072.

The previous prime is 121202102083. The next prime is 121202102129. The reversal of 121202102122 is 221201202121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 121202102096 and 121202102105.

It is not an unprimeable number, because it can be changed into a prime (121202102129) 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 in 7 ways as a sum of consecutive naturals, for example, 3202248 + ... + 3239875.

It is an arithmetic number, because the mean of its divisors is an integer number (11885718780).

Almost surely, 2^121202102122 is an apocalyptic number.

121202102122 is a deficient number, since it is larger than the sum of its proper divisors (68969398358).

121202102122 is a wasteful number, since it uses less digits than its factorization.

121202102122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6442557.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121202102122 its reverse (221201202121), we get a palindrome (342403304243).

Subtracting 121202102122 from its reverse (221201202121), we obtain a palindrome (99999099999).

The spelling of 121202102122 in words is "one hundred twenty-one billion, two hundred two million, one hundred two thousand, one hundred twenty-two".