21210122101102 has 16 divisors (see below), whose sum is σ = 35514623054592. Its totient is φ = 9416756112120.

The previous prime is 21210122101081. The next prime is 21210122101109. The reversal of 21210122101102 is 20110122101212.

It is a super-2 number, since 2×21210122101102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210122101109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11210422998 + ... + 11210424889.

It is an arithmetic number, because the mean of its divisors is an integer number (2219663940912).

Almost surely, 2^{21210122101102} is an apocalyptic number.

21210122101102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21210122101102 is a deficient number, since it is larger than the sum of its proper divisors (14304500953490).

21210122101102 is a wasteful number, since it uses less digits than its factorization.

21210122101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420847943.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210122101102 its reverse (20110122101212), we get a palindrome (41320244202314).

The spelling of 21210122101102 in words is "twenty-one trillion, two hundred ten billion, one hundred twenty-two million, one hundred one thousand, one hundred two".