21354131110 has 32 divisors (see below), whose sum is σ = 41977196352. Its totient is φ = 7773548160.

The previous prime is 21354131101. The next prime is 21354131119. The reversal of 21354131110 is 1113145312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21354131101) and next prime (21354131119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21354131119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1147549 + ... + 1166008.

It is an arithmetic number, because the mean of its divisors is an integer number (1311787386).

Almost surely, 2^21354131110 is an apocalyptic number.

21354131110 is a deficient number, since it is larger than the sum of its proper divisors (20623065242).

21354131110 is a wasteful number, since it uses less digits than its factorization.

21354131110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313648.

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 21354131110 its reverse (1113145312), we get a palindrome (22467276422).

The spelling of 21354131110 in words is "twenty-one billion, three hundred fifty-four million, one hundred thirty-one thousand, one hundred ten".