21152153001 has 16 divisors (see below), whose sum is σ = 32564142464. Its totient is φ = 11962335744.

The previous prime is 21152152939. The next prime is 21152153017. The reversal of 21152153001 is 10035125112.

It is not a de Polignac number, because 21152153001 - 2⁷ = 21152152873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (21152153051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5189950 + ... + 5194023.

It is an arithmetic number, because the mean of its divisors is an integer number (2035258904).

Almost surely, 2^21152153001 is an apocalyptic number.

21152153001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21152153001 is a deficient number, since it is larger than the sum of its proper divisors (11411989463).

21152153001 is a wasteful number, since it uses less digits than its factorization.

21152153001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10384080.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 21152153001 its reverse (10035125112), we get a palindrome (31187278113).

The spelling of 21152153001 in words is "twenty-one billion, one hundred fifty-two million, one hundred fifty-three thousand, one".