21150402411 has 8 divisors (see below), whose sum is σ = 28203674944. Its totient is φ = 14098699080.

The previous prime is 21150402391. The next prime is 21150402431. The reversal of 21150402411 is 11420405112.

It is an interprime number because it is at equal distance from previous prime (21150402391) and next prime (21150402431).

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

It is not a de Polignac number, because 21150402411 - 2⁵ = 21150402379 is a prime.

It is a super-2 number, since 2×21150402411² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21150402431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360481 + ... + 415026.

It is an arithmetic number, because the mean of its divisors is an integer number (3525459368).

Almost surely, 2^21150402411 is an apocalyptic number.

21150402411 is a deficient number, since it is larger than the sum of its proper divisors (7053272533).

21150402411 is an equidigital number, since it uses as much as digits as its factorization.

21150402411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784601.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 21150402411 its reverse (11420405112), we get a palindrome (32570807523).

The spelling of 21150402411 in words is "twenty-one billion, one hundred fifty million, four hundred two thousand, four hundred eleven".