20134111221 has 48 divisors (see below), whose sum is σ = 34730182080. Its totient is φ = 11494617120.

The previous prime is 20134111189. The next prime is 20134111237. The reversal of 20134111221 is 12211143102.

20134111221 is a `hidden beast` number, since 20 + 13 + 411 + 1 + 221 = 666.

It is not a de Polignac number, because 20134111221 - 2⁵ = 20134111189 is a prime.

It is a super-2 number, since 2×20134111221² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20134111194 and 20134111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134111421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1563991 + ... + 1576811.

It is an arithmetic number, because the mean of its divisors is an integer number (723545460).

Almost surely, 2^20134111221 is an apocalyptic number.

20134111221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20134111221 is a deficient number, since it is larger than the sum of its proper divisors (14596070859).

20134111221 is a wasteful number, since it uses less digits than its factorization.

20134111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14031 (or 14018 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20134111221 its reverse (12211143102), we get a palindrome (32345254323).

The spelling of 20134111221 in words is "twenty billion, one hundred thirty-four million, one hundred eleven thousand, two hundred twenty-one".