221412501052152 has 32 divisors (see below), whose sum is σ = 561327467460480. Its totient is φ = 72764671706720.

The previous prime is 221412501052129. The next prime is 221412501052163. The reversal of 221412501052152 is 251250105214122.

It is a super-2 number, since 2×221412501052152² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64968455178 + ... + 64968458585.

It is an arithmetic number, because the mean of its divisors is an integer number (17541483358140).

Almost surely, 2^{221412501052152} is an apocalyptic number.

It is an amenable number.

221412501052152 is an abundant number, since it is smaller than the sum of its proper divisors (339914966408328).

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

221412501052152 is a wasteful number, since it uses less digits than its factorization.

221412501052152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129936913843 (or 129936913839 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

Adding to 221412501052152 its reverse (251250105214122), we get a palindrome (472662606266274).

The spelling of 221412501052152 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred one million, fifty-two thousand, one hundred fifty-two".