21461102 has 16 divisors (see below), whose sum is σ = 35864640. Its totient is φ = 9563232.

The previous prime is 21461087. The next prime is 21461107. The reversal of 21461102 is 20116412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21461107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13478 + ... + 14985.

It is an arithmetic number, because the mean of its divisors is an integer number (2241540).

Almost surely, 2^21461102 is an apocalyptic number.

21461102 is a deficient number, since it is larger than the sum of its proper divisors (14403538).

21461102 is a wasteful number, since it uses less digits than its factorization.

21461102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28507.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21461102 is about 4632.6128696449. The cubic root of 21461102 is about 277.8970945665.

Adding to 21461102 its reverse (20116412), we get a palindrome (41577514).

It can be divided in two parts, 214 and 61102, that added together give a palindrome (61316).

The spelling of 21461102 in words is "twenty-one million, four hundred sixty-one thousand, one hundred two".