20010120021210 has 256 divisors, whose sum is σ = 53200676745216. Its totient is φ = 4776480000000.

The previous prime is 20010120021197. The next prime is 20010120021211. The reversal of 20010120021210 is 1212002101002.

It is not an unprimeable number, because it can be changed into a prime (20010120021211) 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 127 ways as a sum of consecutive naturals, for example, 7169514915 + ... + 7169517705.

It is an arithmetic number, because the mean of its divisors is an integer number (207815143536).

Almost surely, 2^{20010120021210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20010120021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26600338372608).

20010120021210 is an abundant number, since it is smaller than the sum of its proper divisors (33190556724006).

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

20010120021210 is a wasteful number, since it uses less digits than its factorization.

20010120021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20010120021210 its reverse (1212002101002), we get a palindrome (21222122122212).

The spelling of 20010120021210 in words is "twenty trillion, ten billion, one hundred twenty million, twenty-one thousand, two hundred ten".