21122101102 has 8 divisors (see below), whose sum is σ = 31683956616. Its totient is φ = 10560782232.

The previous prime is 21122101081. The next prime is 21122101109. The reversal of 21122101102 is 20110122112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21122101102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122101109) 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 3 ways as a sum of consecutive naturals, for example, 14368 + ... + 206035.

It is an arithmetic number, because the mean of its divisors is an integer number (3960494577).

Almost surely, 2^21122101102 is an apocalyptic number.

21122101102 is a deficient number, since it is larger than the sum of its proper divisors (10561855514).

21122101102 is a wasteful number, since it uses less digits than its factorization.

21122101102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268322.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21122101102 its reverse (20110122112), we get a palindrome (41232223214).

The spelling of 21122101102 in words is "twenty-one billion, one hundred twenty-two million, one hundred one thousand, one hundred two".