21010233153 has 32 divisors (see below), whose sum is σ = 34601156352. Its totient is φ = 11042841600.

The previous prime is 21010233107. The next prime is 21010233157. The reversal of 21010233153 is 35133201012.

It is not a de Polignac number, because 21010233153 - 2¹² = 21010229057 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 (21010233157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60228 + ... + 213653.

It is an arithmetic number, because the mean of its divisors is an integer number (1081286136).

Almost surely, 2^21010233153 is an apocalyptic number.

It is an amenable number.

21010233153 is a deficient number, since it is larger than the sum of its proper divisors (13590923199).

21010233153 is a wasteful number, since it uses less digits than its factorization.

21010233153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274185.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 21010233153 its reverse (35133201012), we get a palindrome (56143434165).

The spelling of 21010233153 in words is "twenty-one billion, ten million, two hundred thirty-three thousand, one hundred fifty-three".