21021120011122 has 64 divisors (see below), whose sum is σ = 41053088507904. Its totient is φ = 7827915997440.

The previous prime is 21021120011069. The next prime is 21021120011141. The reversal of 21021120011122 is 22111002112012.

It is a junction number, because it is equal to n+sod(n) for n = 21021120011096 and 21021120011105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2306073 + ... + 6881875.

It is an arithmetic number, because the mean of its divisors is an integer number (641454507936).

Almost surely, 2^{21021120011122} is an apocalyptic number.

21021120011122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21021120011122 is a deficient number, since it is larger than the sum of its proper divisors (20031968496782).

21021120011122 is a wasteful number, since it uses less digits than its factorization.

21021120011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4577143.

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

Adding to 21021120011122 its reverse (22111002112012), we get a palindrome (43132122123134).

The spelling of 21021120011122 in words is "twenty-one trillion, twenty-one billion, one hundred twenty million, eleven thousand, one hundred twenty-two".