221411220410121 has 16 divisors (see below), whose sum is σ = 342010286976384. Its totient is φ = 124787537138304.

The previous prime is 221411220410089. The next prime is 221411220410129. The reversal of 221411220410121 is 121014022114122.

It is not a de Polignac number, because 221411220410121 - 2⁵ = 221411220410089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221411220410091 and 221411220410100.

It is not an unprimeable number, because it can be changed into a prime (221411220410129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72215008386 + ... + 72215011451.

It is an arithmetic number, because the mean of its divisors is an integer number (21375642936024).

Almost surely, 2^{221411220410121} is an apocalyptic number.

221411220410121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

221411220410121 is a deficient number, since it is larger than the sum of its proper divisors (120599066566263).

221411220410121 is a wasteful number, since it uses less digits than its factorization.

221411220410121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144430019920.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 221411220410121 its reverse (121014022114122), we get a palindrome (342425242524243).

The spelling of 221411220410121 in words is "two hundred twenty-one trillion, four hundred eleven billion, two hundred twenty million, four hundred ten thousand, one hundred twenty-one".