21411122 has 16 divisors (see below), whose sum is σ = 32831232. Its totient is φ = 10469520.

The previous prime is 21411107. The next prime is 21411149. The reversal of 21411122 is 22111412.

It is a happy number.

It is a super-2 number, since 2×21411122² = 916872290597768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21411097 and 21411106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26813 + ... + 27599.

It is an arithmetic number, because the mean of its divisors is an integer number (2051952).

Almost surely, 2^21411122 is an apocalyptic number.

21411122 is a deficient number, since it is larger than the sum of its proper divisors (11420110).

21411122 is a wasteful number, since it uses less digits than its factorization.

21411122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 32, while the sum is 14.

The square root of 21411122 is about 4627.2153613161. The cubic root of 21411122 is about 277.6811986500.

Adding to 21411122 its reverse (22111412), we get a palindrome (43522534).

The spelling of 21411122 in words is "twenty-one million, four hundred eleven thousand, one hundred twenty-two".