21453011102 has 8 divisors (see below), whose sum is σ = 32182350096. Its totient is φ = 10725561072.

The previous prime is 21453011101. The next prime is 21453011147. The reversal of 21453011102 is 20111035412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21453011101) 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, 443498 + ... + 489485.

It is an arithmetic number, because the mean of its divisors is an integer number (4022793762).

Almost surely, 2^21453011102 is an apocalyptic number.

21453011102 is a deficient number, since it is larger than the sum of its proper divisors (10729338994).

21453011102 is a wasteful number, since it uses less digits than its factorization.

21453011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944482.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 21453011102 its reverse (20111035412), we get a palindrome (41564046514).

The spelling of 21453011102 in words is "twenty-one billion, four hundred fifty-three million, eleven thousand, one hundred two".