21150233453001 has 4 divisors (see below), whose sum is σ = 28200311270672. Its totient is φ = 14100155635332.

The previous prime is 21150233452993. The next prime is 21150233453143. The reversal of 21150233453001 is 10035433205112.

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 21150233453001 - 2³ = 21150233452993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21150233453001.

It is not an unprimeable number, because it can be changed into a prime (21150233403001) 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, 3525038908831 + ... + 3525038908836.

It is an arithmetic number, because the mean of its divisors is an integer number (7050077817668).

Almost surely, 2^{21150233453001} is an apocalyptic number.

It is an amenable number.

21150233453001 is a deficient number, since it is larger than the sum of its proper divisors (7050077817671).

21150233453001 is an equidigital number, since it uses as much as digits as its factorization.

21150233453001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050077817670.

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

Adding to 21150233453001 its reverse (10035433205112), we get a palindrome (31185666658113).

The spelling of 21150233453001 in words is "twenty-one trillion, one hundred fifty billion, two hundred thirty-three million, four hundred fifty-three thousand, one".