120215045421 has 24 divisors (see below), whose sum is σ = 179269099776. Its totient is φ = 77547827520.

The previous prime is 120215045417. The next prime is 120215045441. The reversal of 120215045421 is 124540512021.

It is a happy number.

120215045421 is a `hidden beast` number, since 1 + 20 + 215 + 0 + 4 + 5 + 421 = 666.

It is not a de Polignac number, because 120215045421 - 2² = 120215045417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120215045441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2476641 + ... + 2524713.

It is an arithmetic number, because the mean of its divisors is an integer number (7469545824).

Almost surely, 2^120215045421 is an apocalyptic number.

It is an amenable number.

120215045421 is a deficient number, since it is larger than the sum of its proper divisors (59054054355).

120215045421 is a wasteful number, since it uses less digits than its factorization.

120215045421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57073 (or 57070 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 120215045421 its reverse (124540512021), we get a palindrome (244755557442).

The spelling of 120215045421 in words is "one hundred twenty billion, two hundred fifteen million, forty-five thousand, four hundred twenty-one".