21014122 has 4 divisors (see below), whose sum is σ = 31521186. Its totient is φ = 10507060.

The previous prime is 21014101. The next prime is 21014131. The reversal of 21014122 is 22141012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20985561 + 28561 = 4581^2 + 169^2 .

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5253529 + ... + 5253532.

Almost surely, 2^21014122 is an apocalyptic number.

21014122 is a deficient number, since it is larger than the sum of its proper divisors (10507064).

21014122 is a wasteful number, since it uses less digits than its factorization.

21014122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10507063.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 21014122 is about 4584.1162725219. The cubic root of 21014122 is about 275.9542474745.

Adding to 21014122 its reverse (22141012), we get a palindrome (43155134).

The spelling of 21014122 in words is "twenty-one million, fourteen thousand, one hundred twenty-two".