21011201201010 has 384 divisors, whose sum is σ = 56477932093440. Its totient is φ = 4995125356032.

The previous prime is 21011201200999. The next prime is 21011201201033. The reversal of 21011201201010 is 1010210211012.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1774738671 + ... + 1774750509.

It is an arithmetic number, because the mean of its divisors is an integer number (147077948160).

Almost surely, 2^{21011201201010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21011201201010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28238966046720).

21011201201010 is an abundant number, since it is smaller than the sum of its proper divisors (35466730892430).

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

21011201201010 is a wasteful number, since it uses less digits than its factorization.

21011201201010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070 (or 12051 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21011201201010 its reverse (1010210211012), we get a palindrome (22021411412022).

The spelling of 21011201201010 in words is "twenty-one trillion, eleven billion, two hundred one million, two hundred one thousand, ten".