221201502 has 48 divisors (see below), whose sum is σ = 466577280. Its totient is φ = 69890464.

The previous prime is 221201483. The next prime is 221201521. The reversal of 221201502 is 205102122.

It is an interprime number because it is at equal distance from previous prime (221201483) and next prime (221201521).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297343 + ... + 298085.

It is an arithmetic number, because the mean of its divisors is an integer number (9720360).

Almost surely, 2^221201502 is an apocalyptic number.

221201502 is an abundant number, since it is smaller than the sum of its proper divisors (245375778).

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

221201502 is a wasteful number, since it uses less digits than its factorization.

221201502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 221201502 is about 14872.8444488605. The cubic root of 221201502 is about 604.7780548730.

Adding to 221201502 its reverse (205102122), we get a palindrome (426303624).

The spelling of 221201502 in words is "two hundred twenty-one million, two hundred one thousand, five hundred two".