121525402150355 has 16 divisors (see below), whose sum is σ = 166778587315200. Its totient is φ = 83274115005792.

The previous prime is 121525402150231. The next prime is 121525402150367. The reversal of 121525402150355 is 553051204525121.

It is a cyclic number.

It is not a de Polignac number, because 121525402150355 - 2¹⁰ = 121525402149331 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1199726255 + ... + 1199827544.

It is an arithmetic number, because the mean of its divisors is an integer number (10423661707200).

Almost surely, 2^{121525402150355} is an apocalyptic number.

121525402150355 is a deficient number, since it is larger than the sum of its proper divisors (45253185164845).

121525402150355 is a wasteful number, since it uses less digits than its factorization.

121525402150355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399555258.

The product of its (nonzero) digits is 300000, while the sum is 41.

Adding to 121525402150355 its reverse (553051204525121), we get a palindrome (674576606675476).

The spelling of 121525402150355 in words is "one hundred twenty-one trillion, five hundred twenty-five billion, four hundred two million, one hundred fifty thousand, three hundred fifty-five".