21002111001122 has 8 divisors (see below), whose sum is σ = 31711796743872. Its totient is φ = 10431512086500.

The previous prime is 21002111001107. The next prime is 21002111001187. The reversal of 21002111001122 is 22110011120012.

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

It is a junction number, because it is equal to n+sod(n) for n = 21002111001097 and 21002111001106.

It is an unprimeable number.

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, 34771706654 + ... + 34771707257.

It is an arithmetic number, because the mean of its divisors is an integer number (3963974592984).

Almost surely, 2^{21002111001122} is an apocalyptic number.

21002111001122 is a deficient number, since it is larger than the sum of its proper divisors (10709685742750).

21002111001122 is a wasteful number, since it uses less digits than its factorization.

21002111001122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69543414064.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21002111001122 its reverse (22110011120012), we get a palindrome (43112122121134).

The spelling of 21002111001122 in words is "twenty-one trillion, two billion, one hundred eleven million, one thousand, one hundred twenty-two".