21471001162 has 8 divisors (see below), whose sum is σ = 34683924996. Its totient is φ = 9909692832.

The previous prime is 21471001159. The next prime is 21471001177. The reversal of 21471001162 is 26110017412.

It can be written as a sum of positive squares in 2 ways, for example, as 18777494961 + 2693506201 = 137031^2 + 51899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21471001162² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412903843 + ... + 412903894.

Almost surely, 2^21471001162 is an apocalyptic number.

21471001162 is a deficient number, since it is larger than the sum of its proper divisors (13212923834).

21471001162 is a wasteful number, since it uses less digits than its factorization.

21471001162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825807752.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 21471001162 its reverse (26110017412), we get a palindrome (47581018574).

The spelling of 21471001162 in words is "twenty-one billion, four hundred seventy-one million, one thousand, one hundred sixty-two".