21102120011202 has 32 divisors (see below), whose sum is σ = 42372723722112. Its totient is φ = 7005964898304.

The previous prime is 21102120011173. The next prime is 21102120011207. The reversal of 21102120011202 is 20211002120112.

It is not an unprimeable number, because it can be changed into a prime (21102120011207) 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 15 ways as a sum of consecutive naturals, for example, 14747028 + ... + 16114560.

It is an arithmetic number, because the mean of its divisors is an integer number (1324147616316).

Almost surely, 2^{21102120011202} is an apocalyptic number.

21102120011202 is an abundant number, since it is smaller than the sum of its proper divisors (21270603710910).

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

21102120011202 is a wasteful number, since it uses less digits than its factorization.

21102120011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377802.

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

Adding to 21102120011202 its reverse (20211002120112), we get a palindrome (41313122131314).

The spelling of 21102120011202 in words is "twenty-one trillion, one hundred two billion, one hundred twenty million, eleven thousand, two hundred two".