21151162 has 16 divisors (see below), whose sum is σ = 34414632. Its totient is φ = 9710080.

The previous prime is 21151159. The next prime is 21151171. The reversal of 21151162 is 26115112.

It can be written as a sum of positive squares in 4 ways, for example, as 19616041 + 1535121 = 4429^2 + 1239^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6193 + ... + 8980.

Almost surely, 2^21151162 is an apocalyptic number.

21151162 is a deficient number, since it is larger than the sum of its proper divisors (13263470).

21151162 is a wasteful number, since it uses less digits than its factorization.

21151162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15233.

The product of its digits is 120, while the sum is 19.

The square root of 21151162 is about 4599.0392474951. The cubic root of 21151162 is about 276.5528110089.

Adding to 21151162 its reverse (26115112), we get a palindrome (47266274).

The spelling of 21151162 in words is "twenty-one million, one hundred fifty-one thousand, one hundred sixty-two".