121413000021 has 16 divisors (see below), whose sum is σ = 166972837824. Its totient is φ = 78416360064.

The previous prime is 121413000019. The next prime is 121413000029. The reversal of 121413000021 is 120000314121.

It is not a de Polignac number, because 121413000021 - 2¹ = 121413000019 is a prime.

It is a super-2 number, since 2×121413000021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121413000029) 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 15 ways as a sum of consecutive naturals, for example, 2321371 + ... + 2373096.

It is an arithmetic number, because the mean of its divisors is an integer number (10435802364).

Almost surely, 2^121413000021 is an apocalyptic number.

It is an amenable number.

121413000021 is a deficient number, since it is larger than the sum of its proper divisors (45559837803).

121413000021 is a wasteful number, since it uses less digits than its factorization.

121413000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4694740.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121413000021 its reverse (120000314121), we get a palindrome (241413314142).

The spelling of 121413000021 in words is "one hundred twenty-one billion, four hundred thirteen million, twenty-one", and thus it is an aban number.