121022513 has 2 divisors, whose sum is σ = 121022514. Its totient is φ = 121022512.

The previous prime is 121022477. The next prime is 121022521. The reversal of 121022513 is 315220121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96983104 + 24039409 = 9848^2 + 4903^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022513 - 2¹⁸ = 120760369 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121022491 and 121022500.

It is not a weakly prime, because it can be changed into another prime (121022593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511256 + 60511257.

It is an arithmetic number, because the mean of its divisors is an integer number (60511257).

Almost surely, 2^121022513 is an apocalyptic number.

It is an amenable number.

121022513 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022513 is an equidigital number, since it uses as much as digits as its factorization.

121022513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 121022513 is about 11001.0232705872. The cubic root of 121022513 is about 494.6394177027.

Adding to 121022513 its reverse (315220121), we get a palindrome (436242634).

The spelling of 121022513 in words is "one hundred twenty-one million, twenty-two thousand, five hundred thirteen".