121021411 has 8 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 103681608.

The previous prime is 121021403. The next prime is 121021421. The reversal of 121021411 is 114120121.

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 121021411 - 2³ = 121021403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121021391 and 121021400.

It is not an unprimeable number, because it can be changed into a prime (121021421) 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, 20940 + ... + 26086.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^121021411 is an apocalyptic number.

121021411 is a deficient number, since it is larger than the sum of its proper divisors (17356829).

121021411 is an equidigital number, since it uses as much as digits as its factorization.

121021411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8513.

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

The square root of 121021411 is about 11000.9731842233. The cubic root of 121021411 is about 494.6379163448.

Adding to 121021411 its reverse (114120121), we get a palindrome (235141532).

The spelling of 121021411 in words is "one hundred twenty-one million, twenty-one thousand, four hundred eleven".