21434021102 has 16 divisors (see below), whose sum is σ = 34735532832. Its totient is φ = 9860812320.

The previous prime is 21434021051. The next prime is 21434021111. The reversal of 21434021102 is 20112043412.

It is a super-3 number, since 3×21434021102³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

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, 1317293 + ... + 1333464.

It is an arithmetic number, because the mean of its divisors is an integer number (2170970802).

Almost surely, 2^21434021102 is an apocalyptic number.

21434021102 is a deficient number, since it is larger than the sum of its proper divisors (13301511730).

21434021102 is a wasteful number, since it uses less digits than its factorization.

21434021102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2651083.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21434021102 its reverse (20112043412), we get a palindrome (41546064514).

The spelling of 21434021102 in words is "twenty-one billion, four hundred thirty-four million, twenty-one thousand, one hundred two".