21202341012111 has 16 divisors (see below), whose sum is σ = 32308597778688. Its totient is φ = 12115522704000.

The previous prime is 21202341012101. The next prime is 21202341012119. The reversal of 21202341012111 is 11121014320212.

It is not a de Polignac number, because 21202341012111 - 2⁵ = 21202341012079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202341012119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1573050 + ... + 6699191.

It is an arithmetic number, because the mean of its divisors is an integer number (2019287361168).

Almost surely, 2^{21202341012111} is an apocalyptic number.

21202341012111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

21202341012111 is a deficient number, since it is larger than the sum of its proper divisors (11106256766577).

21202341012111 is a wasteful number, since it uses less digits than its factorization.

21202341012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8394302.

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 21202341012111 its reverse (11121014320212), we get a palindrome (32323355332323).

The spelling of 21202341012111 in words is "twenty-one trillion, two hundred two billion, three hundred forty-one million, twelve thousand, one hundred eleven".