20021110212110 has 64 divisors (see below), whose sum is σ = 41887212618240. Its totient is φ = 6747697595520.

The previous prime is 20021110212101. The next prime is 20021110212119. The reversal of 20021110212110 is 1121201112002.

It is an interprime number because it is at equal distance from previous prime (20021110212101) and next prime (20021110212119).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021110212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5506361 + ... + 8388219.

It is an arithmetic number, because the mean of its divisors is an integer number (654487697160).

Almost surely, 2^{20021110212110} is an apocalyptic number.

20021110212110 is an abundant number, since it is smaller than the sum of its proper divisors (21866102406130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021110212110 is a wasteful number, since it uses less digits than its factorization.

20021110212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883561.

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

Adding to 20021110212110 its reverse (1121201112002), we get a palindrome (21142311324112).

The spelling of 20021110212110 in words is "twenty trillion, twenty-one billion, one hundred ten million, two hundred twelve thousand, one hundred ten".