21221451114 has 32 divisors (see below), whose sum is σ = 43416160704. Its totient is φ = 6912672000.

The previous prime is 21221451113. The next prime is 21221451131. The reversal of 21221451114 is 41115412212.

It is a super-3 number, since 3×21221451114³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21221451113) 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, 53119 + ... + 212754.

It is an arithmetic number, because the mean of its divisors is an integer number (1356755022).

Almost surely, 2^21221451114 is an apocalyptic number.

21221451114 is an abundant number, since it is smaller than the sum of its proper divisors (22194709590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21221451114 is a wasteful number, since it uses less digits than its factorization.

21221451114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266182.

The product of its digits is 640, while the sum is 24.

Adding to 21221451114 its reverse (41115412212), we get a palindrome (62336863326).

The spelling of 21221451114 in words is "twenty-one billion, two hundred twenty-one million, four hundred fifty-one thousand, one hundred fourteen".