21242216152 has 16 divisors (see below), whose sum is σ = 39848054400. Its totient is φ = 10616068320.

The previous prime is 21242216131. The next prime is 21242216173. The reversal of 21242216152 is 25161224212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21242216131) and next prime (21242216173).

It is a super-3 number, since 3×21242216152³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21242216152.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612027 + ... + 645802.

It is an arithmetic number, because the mean of its divisors is an integer number (2490503400).

Almost surely, 2^21242216152 is an apocalyptic number.

It is an amenable number.

21242216152 is a deficient number, since it is larger than the sum of its proper divisors (18605838248).

21242216152 is a wasteful number, since it uses less digits than its factorization.

21242216152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259946 (or 1259942 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The spelling of 21242216152 in words is "twenty-one billion, two hundred forty-two million, two hundred sixteen thousand, one hundred fifty-two".