121145520102 has 64 divisors (see below), whose sum is σ = 250278336000. Its totient is φ = 39063873024.

The previous prime is 121145520043. The next prime is 121145520107. The reversal of 121145520102 is 201025541121.

It is a happy number.

It is a super-3 number, since 3×121145520102³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121145520107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34621149 + ... + 34624647.

It is an arithmetic number, because the mean of its divisors is an integer number (3910599000).

Almost surely, 2^121145520102 is an apocalyptic number.

121145520102 is an abundant number, since it is smaller than the sum of its proper divisors (129132815898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121145520102 is a wasteful number, since it uses less digits than its factorization.

121145520102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397.

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 121145520102 in words is "one hundred twenty-one billion, one hundred forty-five million, five hundred twenty thousand, one hundred two".