121206162152 has 16 divisors (see below), whose sum is σ = 229272719940. Its totient is φ = 60066770176.

The previous prime is 121206162113. The next prime is 121206162163. The reversal of 121206162152 is 251261602121.

It can be written as a sum of positive squares in 2 ways, for example, as 83074227076 + 38131935076 = 288226^2 + 195274^2 .

It is a super-2 number, since 2×121206162152² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67037903 + ... + 67039710.

Almost surely, 2^121206162152 is an apocalyptic number.

It is an amenable number.

121206162152 is a deficient number, since it is larger than the sum of its proper divisors (108066557788).

121206162152 is a wasteful number, since it uses less digits than its factorization.

121206162152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134077732 (or 134077728 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 121206162152 its reverse (251261602121), we get a palindrome (372467764273).

The spelling of 121206162152 in words is "one hundred twenty-one billion, two hundred six million, one hundred sixty-two thousand, one hundred fifty-two".