121252005450111 has 16 divisors (see below), whose sum is σ = 161759913988608. Its totient is φ = 80789395024800.

The previous prime is 121252005450083. The next prime is 121252005450157. The reversal of 121252005450111 is 111054500252121.

It is not a de Polignac number, because 121252005450111 - 2⁶ = 121252005450047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121252005450811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41169126 + ... + 44015916.

It is an arithmetic number, because the mean of its divisors is an integer number (10109994624288).

Almost surely, 2^{121252005450111} is an apocalyptic number.

121252005450111 is a deficient number, since it is larger than the sum of its proper divisors (40507908538497).

121252005450111 is a wasteful number, since it uses less digits than its factorization.

121252005450111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854742.

The product of its (nonzero) digits is 4000, while the sum is 30.

The spelling of 121252005450111 in words is "one hundred twenty-one trillion, two hundred fifty-two billion, five million, four hundred fifty thousand, one hundred eleven".