21233250153 has 12 divisors (see below), whose sum is σ = 31039772400. Its totient is φ = 13984951416.

The previous prime is 21233250151. The next prime is 21233250167. The reversal of 21233250153 is 35105233212.

It is a happy number.

21233250153 is a `hidden beast` number, since 2 + 123 + 32 + 501 + 5 + 3 = 666.

It is not a de Polignac number, because 21233250153 - 2¹ = 21233250151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21233250151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14211603 + ... + 14213096.

It is an arithmetic number, because the mean of its divisors is an integer number (2586647700).

Almost surely, 2^21233250153 is an apocalyptic number.

It is an amenable number.

21233250153 is a deficient number, since it is larger than the sum of its proper divisors (9806522247).

21233250153 is a wasteful number, since it uses less digits than its factorization.

21233250153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28424788 (or 28424785 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 21233250153 its reverse (35105233212), we get a palindrome (56338483365).

The spelling of 21233250153 in words is "twenty-one billion, two hundred thirty-three million, two hundred fifty thousand, one hundred fifty-three".