1030101221 has 2 divisors, whose sum is σ = 1030101222. Its totient is φ = 1030101220.

The previous prime is 1030101211. The next prime is 1030101223. The reversal of 1030101221 is 1221010301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 670240321 + 359860900 = 25889^2 + 18970^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1030101221 is a prime.

It is a super-3 number, since 3×1030101221³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 1030101223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1030101223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515050610 + 515050611.

It is an arithmetic number, because the mean of its divisors is an integer number (515050611).

Almost surely, 2^1030101221 is an apocalyptic number.

It is an amenable number.

1030101221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1030101221 is an equidigital number, since it uses as much as digits as its factorization.

1030101221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1030101221 is about 32095.1899978797. The cubic root of 1030101221 is about 1009.9347149253.

Adding to 1030101221 its reverse (1221010301), we get a palindrome (2251111522).

The spelling of 1030101221 in words is "one billion, thirty million, one hundred one thousand, two hundred twenty-one".