21011020022110 has 16 divisors (see below), whose sum is σ = 37963637702496. Its totient is φ = 8372452083808.

The previous prime is 21011020022039. The next prime is 21011020022123. The reversal of 21011020022110 is 1122002011012.

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, 3994487869 + ... + 3994493128.

It is an arithmetic number, because the mean of its divisors is an integer number (2372727356406).

Almost surely, 2^{21011020022110} is an apocalyptic number.

21011020022110 is a deficient number, since it is larger than the sum of its proper divisors (16952617680386).

21011020022110 is a wasteful number, since it uses less digits than its factorization.

21011020022110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988981267.

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

Adding to 21011020022110 its reverse (1122002011012), we get a palindrome (22133022033122).

The spelling of 21011020022110 in words is "twenty-one trillion, eleven billion, twenty million, twenty-two thousand, one hundred ten".