11102212100621 has 2 divisors, whose sum is σ = 11102212100622. Its totient is φ = 11102212100620.

The previous prime is 11102212100563. The next prime is 11102212100687. The reversal of 11102212100621 is 12600121220111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8186522664100 + 2915689436521 = 2861210^2 + 1707539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11102212100621 is a prime.

It is a super-2 number, since 2×11102212100621² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11102212100593 and 11102212100602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11102212180621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5551106050310 + 5551106050311.

It is an arithmetic number, because the mean of its divisors is an integer number (5551106050311).

Almost surely, 2^{11102212100621} is an apocalyptic number.

It is an amenable number.

11102212100621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102212100621 is an equidigital number, since it uses as much as digits as its factorization.

11102212100621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 11102212100621 its reverse (12600121220111), we get a palindrome (23702333320732).

The spelling of 11102212100621 in words is "eleven trillion, one hundred two billion, two hundred twelve million, one hundred thousand, six hundred twenty-one".