21202030102 has 16 divisors (see below), whose sum is σ = 34756538832. Its totient is φ = 9619978720.

The previous prime is 21202030037. The next prime is 21202030111. The reversal of 21202030102 is 20103020212.

It is a super-2 number, since 2×21202030102² (a number of 21 digits) contains 22 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, 852853 + ... + 877360.

It is an arithmetic number, because the mean of its divisors is an integer number (2172283677).

Almost surely, 2^21202030102 is an apocalyptic number.

21202030102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21202030102 is a deficient number, since it is larger than the sum of its proper divisors (13554508730).

21202030102 is a wasteful number, since it uses less digits than its factorization.

21202030102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730783.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21202030102 its reverse (20103020212), we get a palindrome (41305050314).

The spelling of 21202030102 in words is "twenty-one billion, two hundred two million, thirty thousand, one hundred two".