21110001022 has 16 divisors (see below), whose sum is σ = 36575617392. Its totient is φ = 9031016320.

The previous prime is 21110001019. The next prime is 21110001083. The reversal of 21110001022 is 22010001112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28221553 + ... + 28222300.

It is an arithmetic number, because the mean of its divisors is an integer number (2285976087).

Almost surely, 2^21110001022 is an apocalyptic number.

21110001022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21110001022 is a deficient number, since it is larger than the sum of its proper divisors (15465616370).

21110001022 is a wasteful number, since it uses less digits than its factorization.

21110001022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56443883.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21110001022 its reverse (22010001112), we get a palindrome (43120002134).

The spelling of 21110001022 in words is "twenty-one billion, one hundred ten million, one thousand, twenty-two".