1201222220101 has 2 divisors, whose sum is σ = 1201222220102. Its totient is φ = 1201222220100.

The previous prime is 1201222220087. The next prime is 1201222220113. The reversal of 1201222220101 is 1010222221021.

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., 817850731201 + 383371488900 = 904351^2 + 619170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201222220101 - 2¹³ = 1201222211909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201222220801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600611110050 + 600611110051.

It is an arithmetic number, because the mean of its divisors is an integer number (600611110051).

Almost surely, 2^{1201222220101} is an apocalyptic number.

It is an amenable number.

1201222220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201222220101 is an equidigital number, since it uses as much as digits as its factorization.

1201222220101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201222220101 its reverse (1010222221021), we get a palindrome (2211444441122).

The spelling of 1201222220101 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred one".