21601202 has 16 divisors (see below), whose sum is σ = 37584960. Its totient is φ = 9119088.

The previous prime is 21601189. The next prime is 21601277. The reversal of 21601202 is 20210612.

It is a super-2 number, since 2×21601202² = 933223855689608, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10577 + ... + 12452.

It is an arithmetic number, because the mean of its divisors is an integer number (2349060).

Almost surely, 2^21601202 is an apocalyptic number.

21601202 is a deficient number, since it is larger than the sum of its proper divisors (15983758).

21601202 is a wasteful number, since it uses less digits than its factorization.

21601202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23105.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21601202 is about 4647.7093282605. The cubic root of 21601202 is about 278.5004958374.

Adding to 21601202 its reverse (20210612), we get a palindrome (41811814).

The spelling of 21601202 in words is "twenty-one million, six hundred one thousand, two hundred two".