20021020121110 has 16 divisors (see below), whose sum is σ = 36037985490576. Its totient is φ = 8008374876768.

The previous prime is 20021020121107. The next prime is 20021020121117. The reversal of 20021020121110 is 1112102012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021020121117) 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 7 ways as a sum of consecutive naturals, for example, 1533084 + ... + 6510943.

It is an arithmetic number, because the mean of its divisors is an integer number (2252374093161).

Almost surely, 2^{20021020121110} is an apocalyptic number.

20021020121110 is a deficient number, since it is larger than the sum of its proper divisors (16016965369466).

20021020121110 is a wasteful number, since it uses less digits than its factorization.

20021020121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292927.

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

Adding to 20021020121110 its reverse (1112102012002), we get a palindrome (21133122133112).

The spelling of 20021020121110 in words is "twenty trillion, twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred ten".