11420121 has 32 divisors (see below), whose sum is σ = 17326080. Its totient is φ = 6652800.

The previous prime is 11420111. The next prime is 11420131. The reversal of 11420121 is 12102411.

It is a happy number.

11420121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11420111) and next prime (11420131).

It is not a de Polignac number, because 11420121 - 2⁵ = 11420089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11420097 and 11420106.

It is not an unprimeable number, because it can be changed into a prime (11420111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40501 + ... + 40781.

It is an arithmetic number, because the mean of its divisors is an integer number (541440).

Almost surely, 2^11420121 is an apocalyptic number.

It is an amenable number.

11420121 is a deficient number, since it is larger than the sum of its proper divisors (5905959).

11420121 is a wasteful number, since it uses less digits than its factorization.

11420121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11420121 is about 3379.3669525519. The cubic root of 11420121 is about 225.1940449489.

Adding to 11420121 its reverse (12102411), we get a palindrome (23522532).

The spelling of 11420121 in words is "eleven million, four hundred twenty thousand, one hundred twenty-one".