121013201230021 has 8 divisors (see below), whose sum is σ = 121587045335424. Its totient is φ = 120439360161120.

The previous prime is 121013201230001. The next prime is 121013201230049. The reversal of 121013201230021 is 120032102310121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121013201230021 - 2²¹ = 121013199132869 is a prime.

It is a super-3 number, since 3×121013201230021³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121013201230001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149011956 + ... + 149821858.

It is an arithmetic number, because the mean of its divisors is an integer number (15198380666928).

Almost surely, 2^{121013201230021} is an apocalyptic number.

It is an amenable number.

121013201230021 is a deficient number, since it is larger than the sum of its proper divisors (573844105403).

121013201230021 is an equidigital number, since it uses as much as digits as its factorization.

121013201230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518251.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121013201230021 its reverse (120032102310121), we get a palindrome (241045303540142).

The spelling of 121013201230021 in words is "one hundred twenty-one trillion, thirteen billion, two hundred one million, two hundred thirty thousand, twenty-one".