121420014223221 has 32 divisors (see below), whose sum is σ = 211135045479680. Its totient is φ = 67507652691648.

The previous prime is 121420014223153. The next prime is 121420014223231. The reversal of 121420014223221 is 122322410024121.

121420014223221 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 200 + 1 + 422 + 32 + 2 + 1 = 666.

It is not a de Polignac number, because 121420014223221 - 2¹⁴ = 121420014206837 is a prime.

It is a super-2 number, since 2×121420014223221² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121420014223231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8681532706 + ... + 8681546691.

It is an arithmetic number, because the mean of its divisors is an integer number (6597970171240).

Almost surely, 2^{121420014223221} is an apocalyptic number.

It is an amenable number.

121420014223221 is a deficient number, since it is larger than the sum of its proper divisors (89715031256459).

121420014223221 is a wasteful number, since it uses less digits than its factorization.

121420014223221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17363079450 (or 17363079444 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 121420014223221 its reverse (122322410024121), we get a palindrome (243742424247342).

The spelling of 121420014223221 in words is "one hundred twenty-one trillion, four hundred twenty billion, fourteen million, two hundred twenty-three thousand, two hundred twenty-one".