21414312152 has 8 divisors (see below), whose sum is σ = 40151835300. Its totient is φ = 10707156072.

The previous prime is 21414312151. The next prime is 21414312203. The reversal of 21414312152 is 25121341412.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×21414312152² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414312151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1338394502 + ... + 1338394517.

Almost surely, 2^21414312152 is an apocalyptic number.

It is an amenable number.

21414312152 is a deficient number, since it is larger than the sum of its proper divisors (18737523148).

21414312152 is a wasteful number, since it uses less digits than its factorization.

21414312152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676789025 (or 2676789021 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

Adding to 21414312152 its reverse (25121341412), we get a palindrome (46535653564).

The spelling of 21414312152 in words is "twenty-one billion, four hundred fourteen million, three hundred twelve thousand, one hundred fifty-two".