221002121102101 has 2 divisors, whose sum is σ = 221002121102102. Its totient is φ = 221002121102100.

The previous prime is 221002121102089. The next prime is 221002121102201. The reversal of 221002121102101 is 101201121200122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153289136238001 + 67712984864100 = 12380999^2 + 8228790^2 .

It is a cyclic number.

It is not a de Polignac number, because 221002121102101 - 2³³ = 220993531167509 is a prime.

It is a super-2 number, since 2×221002121102101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221002121102201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110501060551050 + 110501060551051.

It is an arithmetic number, because the mean of its divisors is an integer number (110501060551051).

Almost surely, 2^{221002121102101} is an apocalyptic number.

It is an amenable number.

221002121102101 is a deficient number, since it is larger than the sum of its proper divisors (1).

221002121102101 is an equidigital number, since it uses as much as digits as its factorization.

221002121102101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221002121102101 its reverse (101201121200122), we get a palindrome (322203242302223).

The spelling of 221002121102101 in words is "two hundred twenty-one trillion, two billion, one hundred twenty-one million, one hundred two thousand, one hundred one".