121122222120401 has 2 divisors, whose sum is σ = 121122222120402. Its totient is φ = 121122222120400.

The previous prime is 121122222120397. The next prime is 121122222120433. The reversal of 121122222120401 is 104021222221121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120547773330625 + 574448789776 = 10979425^2 + 757924^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122222120401 - 2² = 121122222120397 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122222120701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561111060200 + 60561111060201.

It is an arithmetic number, because the mean of its divisors is an integer number (60561111060201).

Almost surely, 2^{121122222120401} is an apocalyptic number.

It is an amenable number.

121122222120401 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122222120401 is an equidigital number, since it uses as much as digits as its factorization.

121122222120401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121122222120401 its reverse (104021222221121), we get a palindrome (225143444341522).

The spelling of 121122222120401 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, four hundred one".