21221102111131 has 8 divisors (see below), whose sum is σ = 22853548058544. Its totient is φ = 19588663803360.

The previous prime is 21221102111119. The next prime is 21221102111171. The reversal of 21221102111131 is 13111120112212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21221102111131 - 2¹¹ = 21221102109083 is a prime.

It is a super-2 number, since 2×21221102111131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21221102111099 and 21221102111108.

It is not an unprimeable number, because it can be changed into a prime (21221102111101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4708836 + ... + 8038366.

It is an arithmetic number, because the mean of its divisors is an integer number (2856693507318).

Almost surely, 2^{21221102111131} is an apocalyptic number.

21221102111131 is a deficient number, since it is larger than the sum of its proper divisors (1632445947413).

21221102111131 is a wasteful number, since it uses less digits than its factorization.

21221102111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3819821.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 21221102111131 its reverse (13111120112212), we get a palindrome (34332222223343).

The spelling of 21221102111131 in words is "twenty-one trillion, two hundred twenty-one billion, one hundred two million, one hundred eleven thousand, one hundred thirty-one".