21150015432033 has 4 divisors (see below), whose sum is σ = 28200020576048. Its totient is φ = 14100010288020.

The previous prime is 21150015432023. The next prime is 21150015432131. The reversal of 21150015432033 is 33023451005112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21150015432033 - 2¹⁰ = 21150015431009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21150015432023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3525002572003 + ... + 3525002572008.

It is an arithmetic number, because the mean of its divisors is an integer number (7050005144012).

Almost surely, 2^{21150015432033} is an apocalyptic number.

It is an amenable number.

21150015432033 is a deficient number, since it is larger than the sum of its proper divisors (7050005144015).

21150015432033 is an equidigital number, since it uses as much as digits as its factorization.

21150015432033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7050005144014.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 21150015432033 its reverse (33023451005112), we get a palindrome (54173466437145).

The spelling of 21150015432033 in words is "twenty-one trillion, one hundred fifty billion, fifteen million, four hundred thirty-two thousand, thirty-three".