121141021 has 4 divisors (see below), whose sum is σ = 121165632. Its totient is φ = 121116412.

The previous prime is 121141003. The next prime is 121141037. The reversal of 121141021 is 120141121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121141021 - 2⁷ = 121140893 is a prime.

It is a super-3 number, since 3×121141021³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121140992 and 121141010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121141061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101 + ... + 15706.

It is an arithmetic number, because the mean of its divisors is an integer number (30291408).

Almost surely, 2^121141021 is an apocalyptic number.

It is an amenable number.

121141021 is a deficient number, since it is larger than the sum of its proper divisors (24611).

121141021 is an equidigital number, since it uses as much as digits as its factorization.

121141021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24610.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121141021 is about 11006.4081788747. The cubic root of 121141021 is about 494.8008190912.

Adding to 121141021 its reverse (120141121), we get a palindrome (241282142).

The spelling of 121141021 in words is "one hundred twenty-one million, one hundred forty-one thousand, twenty-one".