121200212122 has 16 divisors (see below), whose sum is σ = 204725286144. Its totient is φ = 53313876000.

The previous prime is 121200212117. The next prime is 121200212219. The reversal of 121200212122 is 221212002121.

It is a happy number.

121200212122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121200212096 and 121200212105.

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, 88855779 + ... + 88857142.

It is an arithmetic number, because the mean of its divisors is an integer number (12795330384).

Almost surely, 2^121200212122 is an apocalyptic number.

121200212122 is a deficient number, since it is larger than the sum of its proper divisors (83525074022).

121200212122 is a wasteful number, since it uses less digits than its factorization.

121200212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177712965.

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

Adding to 121200212122 its reverse (221212002121), we get a palindrome (342412214243).

It can be divided in two parts, 1212002121 and 22, that multiplied together give a palindrome (26664046662).

The spelling of 121200212122 in words is "one hundred twenty-one billion, two hundred million, two hundred twelve thousand, one hundred twenty-two".