21101452522 has 16 divisors (see below), whose sum is σ = 32575514400. Its totient is φ = 10245784752.

The previous prime is 21101452517. The next prime is 21101452531. The reversal of 21101452522 is 22525410112.

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, 694272 + ... + 724027.

It is an arithmetic number, because the mean of its divisors is an integer number (2035969650).

Almost surely, 2^21101452522 is an apocalyptic number.

21101452522 is a deficient number, since it is larger than the sum of its proper divisors (11474061878).

21101452522 is a wasteful number, since it uses less digits than its factorization.

21101452522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418517.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 21101452522 its reverse (22525410112), we get a palindrome (43626862634).

The spelling of 21101452522 in words is "twenty-one billion, one hundred one million, four hundred fifty-two thousand, five hundred twenty-two".