121371629 has 2 divisors, whose sum is σ = 121371630. Its totient is φ = 121371628.

The previous prime is 121371623. The next prime is 121371659. The reversal of 121371629 is 926173121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118309129 + 3062500 = 10877^2 + 1750^2 .

It is an emirp because it is prime and its reverse (926173121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121371629 is a prime.

It is a super-2 number, since 2×121371629² = 29462144652227282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121371595 and 121371604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121371623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60685814 + 60685815.

It is an arithmetic number, because the mean of its divisors is an integer number (60685815).

Almost surely, 2^121371629 is an apocalyptic number.

It is an amenable number.

121371629 is a deficient number, since it is larger than the sum of its proper divisors (1).

121371629 is an equidigital number, since it uses as much as digits as its factorization.

121371629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 121371629 is about 11016.8792768188. The cubic root of 121371629 is about 495.1145930662.

The spelling of 121371629 in words is "one hundred twenty-one million, three hundred seventy-one thousand, six hundred twenty-nine".