121202151 has 16 divisors (see below), whose sum is σ = 184896000. Its totient is φ = 69180768.

The previous prime is 121202131. The next prime is 121202171. The reversal of 121202151 is 151202121.

It is an interprime number because it is at equal distance from previous prime (121202131) and next prime (121202171).

It is not a de Polignac number, because 121202151 - 2¹⁰ = 121201127 is a prime.

It is a super-2 number, since 2×121202151² = 29379922814053602, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121202151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19750 + ... + 25148.

It is an arithmetic number, because the mean of its divisors is an integer number (11556000).

Almost surely, 2^121202151 is an apocalyptic number.

121202151 is a deficient number, since it is larger than the sum of its proper divisors (63693849).

121202151 is a wasteful number, since it uses less digits than its factorization.

121202151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121202151 is about 11009.1848472083. The cubic root of 121202151 is about 494.8840336442.

Adding to 121202151 its reverse (151202121), we get a palindrome (272404272).

The spelling of 121202151 in words is "one hundred twenty-one million, two hundred two thousand, one hundred fifty-one".