122120000110021 has 2 divisors, whose sum is σ = 122120000110022. Its totient is φ = 122120000110020.

The previous prime is 122120000109983. The next prime is 122120000110027. The reversal of 122120000110021 is 120011000021221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74855131356996 + 47264868753025 = 8651886^2 + 6874945^2 .

It is a cyclic number.

It is not a de Polignac number, because 122120000110021 - 2¹⁹ = 122119999585733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122120000109983 and 122120000110010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122120000110027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61060000055010 + 61060000055011.

It is an arithmetic number, because the mean of its divisors is an integer number (61060000055011).

Almost surely, 2^{122120000110021} is an apocalyptic number.

It is an amenable number.

122120000110021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122120000110021 is an equidigital number, since it uses as much as digits as its factorization.

122120000110021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 122120000110021 its reverse (120011000021221), we get a palindrome (242131000131242).

The spelling of 122120000110021 in words is "one hundred twenty-two trillion, one hundred twenty billion, one hundred ten thousand, twenty-one".