20110121020010 has 64 divisors (see below), whose sum is σ = 41459156121600. Its totient is φ = 6879940300032.

The previous prime is 20110121020001. The next prime is 20110121020013. The reversal of 20110121020010 is 1002012101102.

It is a junction number, because it is equal to n+sod(n) for n = 20110121019973 and 20110121020000.

It is not an unprimeable number, because it can be changed into a prime (20110121020013) 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, 753372224 + ... + 753398916.

It is an arithmetic number, because the mean of its divisors is an integer number (647799314400).

Almost surely, 2^{20110121020010} is an apocalyptic number.

20110121020010 is an abundant number, since it is smaller than the sum of its proper divisors (21349035101590).

20110121020010 is a wasteful number, since it uses less digits than its factorization.

20110121020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49655.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110121020010 its reverse (1002012101102), we get a palindrome (21112133121112).

The spelling of 20110121020010 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, twenty thousand, ten".