121000420224 has 96 divisors (see below), whose sum is σ = 348285436200. Its totient is φ = 40322571264.

The previous prime is 121000420181. The next prime is 121000420271. The reversal of 121000420224 is 422024000121.

121000420224 is a `hidden beast` number, since 1 + 21 + 0 + 0 + 0 + 420 + 224 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×121000420224² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121000420197 and 121000420206.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 5025687 + ... + 5049705.

Almost surely, 2^121000420224 is an apocalyptic number.

It is an amenable number.

121000420224 is an abundant number, since it is smaller than the sum of its proper divisors (227285015976).

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

121000420224 is a wasteful number, since it uses less digits than its factorization.

121000420224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28412 (or 28397 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121000420224 its reverse (422024000121), we get a palindrome (543024420345).

The spelling of 121000420224 in words is "one hundred twenty-one billion, four hundred twenty thousand, two hundred twenty-four".