221412552215502 has 32 divisors (see below), whose sum is σ = 458687555477280. Its totient is φ = 71167026896000.

The previous prime is 221412552215461. The next prime is 221412552215509. The reversal of 221412552215502 is 205512255214122.

It is a super-2 number, since 2×221412552215502² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221412552215509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 822948249 + ... + 823217252.

It is an arithmetic number, because the mean of its divisors is an integer number (14333986108665).

Almost surely, 2^{221412552215502} is an apocalyptic number.

221412552215502 is an abundant number, since it is smaller than the sum of its proper divisors (237275003261778).

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

221412552215502 is a wasteful number, since it uses less digits than its factorization.

221412552215502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646166308.

The product of its (nonzero) digits is 160000, while the sum is 39.

The spelling of 221412552215502 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred fifty-two million, two hundred fifteen thousand, five hundred two".