21122002102102 has 16 divisors (see below), whose sum is σ = 34652127790800. Its totient is φ = 9576229039840.

The previous prime is 21122002102031. The next prime is 21122002102199. The reversal of 21122002102102 is 20120120022112.

It is a happy number.

It is a super-2 number, since 2×21122002102102² (a number of 27 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, 1234041577 + ... + 1234058692.

It is an arithmetic number, because the mean of its divisors is an integer number (2165757986925).

Almost surely, 2^{21122002102102} is an apocalyptic number.

21122002102102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122002102102 is a deficient number, since it is larger than the sum of its proper divisors (13530125688698).

21122002102102 is a wasteful number, since it uses less digits than its factorization.

21122002102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2468100671.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21122002102102 its reverse (20120120022112), we get a palindrome (41242122124214).

The spelling of 21122002102102 in words is "twenty-one trillion, one hundred twenty-two billion, two million, one hundred two thousand, one hundred two".