121222012001 has 2 divisors, whose sum is σ = 121222012002. Its totient is φ = 121222012000.

The previous prime is 121222011997. The next prime is 121222012057. The reversal of 121222012001 is 100210222121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121138106401 + 83905600 = 348049^2 + 9160^2 .

It is a cyclic number.

It is not a de Polignac number, because 121222012001 - 2² = 121222011997 is a prime.

It is not a weakly prime, because it can be changed into another prime (121222012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611006000 + 60611006001.

It is an arithmetic number, because the mean of its divisors is an integer number (60611006001).

Almost surely, 2^121222012001 is an apocalyptic number.

It is an amenable number.

121222012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222012001 is an equidigital number, since it uses as much as digits as its factorization.

121222012001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121222012001 its reverse (100210222121), we get a palindrome (221432234122).

It can be divided in two parts, 1212220 and 12001, that added together give a palindrome (1224221).

The spelling of 121222012001 in words is "one hundred twenty-one billion, two hundred twenty-two million, twelve thousand, one".