120121123261 has 2 divisors, whose sum is σ = 120121123262. Its totient is φ = 120121123260.

The previous prime is 120121123249. The next prime is 120121123333. The reversal of 120121123261 is 162321121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118460560761 + 1660562500 = 344181^2 + 40750^2 .

It is a cyclic number.

It is not a de Polignac number, because 120121123261 - 2⁵ = 120121123229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120121124261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60060561630 + 60060561631.

It is an arithmetic number, because the mean of its divisors is an integer number (60060561631).

Almost surely, 2^120121123261 is an apocalyptic number.

It is an amenable number.

120121123261 is a deficient number, since it is larger than the sum of its proper divisors (1).

120121123261 is an equidigital number, since it uses as much as digits as its factorization.

120121123261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 120121123261 its reverse (162321121021), we get a palindrome (282442244282).

The spelling of 120121123261 in words is "one hundred twenty billion, one hundred twenty-one million, one hundred twenty-three thousand, two hundred sixty-one".