20120222220101 has 2 divisors, whose sum is σ = 20120222220102. Its totient is φ = 20120222220100.

The previous prime is 20120222220023. The next prime is 20120222220193. The reversal of 20120222220101 is 10102222202102.

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., 16288278943876 + 3831943276225 = 4035874^2 + 1957535^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120222220101 - 2¹⁰ = 20120222219077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120222220101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120222226101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111110050 + 10060111110051.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111110051).

Almost surely, 2^{20120222220101} is an apocalyptic number.

It is an amenable number.

20120222220101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222220101 is an equidigital number, since it uses as much as digits as its factorization.

20120222220101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20120222220101 its reverse (10102222202102), we get a palindrome (30222444422203).

The spelling of 20120222220101 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, two hundred twenty thousand, one hundred one".