122221121357 has 2 divisors, whose sum is σ = 122221121358. Its totient is φ = 122221121356.

The previous prime is 122221121299. The next prime is 122221121479. The reversal of 122221121357 is 753121122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120293823556 + 1927297801 = 346834^2 + 43901^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221121357 - 2¹⁸ = 122220859213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122221111357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110560678 + 61110560679.

It is an arithmetic number, because the mean of its divisors is an integer number (61110560679).

Almost surely, 2^122221121357 is an apocalyptic number.

It is an amenable number.

122221121357 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221121357 is an equidigital number, since it uses as much as digits as its factorization.

122221121357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 29.

Adding to 122221121357 its reverse (753121122221), we get a palindrome (875342243578).

The spelling of 122221121357 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred fifty-seven".