20212241121 has 24 divisors (see below), whose sum is σ = 30372398784. Its totient is φ = 13432268880.

The previous prime is 20212241113. The next prime is 20212241123. The reversal of 20212241121 is 12114221202.

20212241121 is a `hidden beast` number, since 20 + 212 + 2 + 411 + 21 = 666.

It is not a de Polignac number, because 20212241121 - 2³ = 20212241113 is a prime.

It is a super-2 number, since 2×20212241121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20212241094 and 20212241103.

It is not an unprimeable number, because it can be changed into a prime (20212241123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54165 + ... + 208226.

It is an arithmetic number, because the mean of its divisors is an integer number (1265516616).

Almost surely, 2^20212241121 is an apocalyptic number.

It is an amenable number.

20212241121 is a deficient number, since it is larger than the sum of its proper divisors (10160157663).

20212241121 is an equidigital number, since it uses as much as digits as its factorization.

20212241121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262723 (or 262711 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20212241121 its reverse (12114221202), we get a palindrome (32326462323).

The spelling of 20212241121 in words is "twenty billion, two hundred twelve million, two hundred forty-one thousand, one hundred twenty-one".