1221414101 has 2 divisors, whose sum is σ = 1221414102. Its totient is φ = 1221414100.

The previous prime is 1221414037. The next prime is 1221414143. The reversal of 1221414101 is 1014141221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1088934001 + 132480100 = 32999^2 + 11510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221414101 - 2⁶ = 1221414037 is a prime.

It is a super-2 number, since 2×1221414101² = 2983704812243276402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221414101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221414191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610707050 + 610707051.

It is an arithmetic number, because the mean of its divisors is an integer number (610707051).

Almost surely, 2^1221414101 is an apocalyptic number.

It is an amenable number.

1221414101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221414101 is an equidigital number, since it uses as much as digits as its factorization.

1221414101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1221414101 is about 34948.7353276195. The cubic root of 1221414101 is about 1068.9424147206.

Adding to 1221414101 its reverse (1014141221), we get a palindrome (2235555322).

The spelling of 1221414101 in words is "one billion, two hundred twenty-one million, four hundred fourteen thousand, one hundred one".