21533341054402 has 16 divisors (see below), whose sum is σ = 32850953290080. Its totient is φ = 10583062000992.

The previous prime is 21533341054369. The next prime is 21533341054429. The reversal of 21533341054402 is 20445014333512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8559648 + ... + 10785835.

It is an arithmetic number, because the mean of its divisors is an integer number (2053184580630).

Almost surely, 2^{21533341054402} is an apocalyptic number.

21533341054402 is a deficient number, since it is larger than the sum of its proper divisors (11317612235678).

21533341054402 is a wasteful number, since it uses less digits than its factorization.

21533341054402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19354977.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 21533341054402 its reverse (20445014333512), we get a palindrome (41978355387914).

The spelling of 21533341054402 in words is "twenty-one trillion, five hundred thirty-three billion, three hundred forty-one million, fifty-four thousand, four hundred two".