21012201201201 has 64 divisors (see below), whose sum is σ = 33735470284800. Its totient is φ = 11364337152000.

The previous prime is 21012201201197. The next prime is 21012201201203. The reversal of 21012201201201 is 10210210221012.

It is not a de Polignac number, because 21012201201201 - 2² = 21012201201197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21012201201203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2379363856 + ... + 2379372686.

It is an arithmetic number, because the mean of its divisors is an integer number (527116723200).

Almost surely, 2^{21012201201201} is an apocalyptic number.

21012201201201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21012201201201 is a deficient number, since it is larger than the sum of its proper divisors (12723269083599).

21012201201201 is a wasteful number, since it uses less digits than its factorization.

21012201201201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13790.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21012201201201 its reverse (10210210221012), we get a palindrome (31222411422213).

The spelling of 21012201201201 in words is "twenty-one trillion, twelve billion, two hundred one million, two hundred one thousand, two hundred one".