1220222042101 has 2 divisors, whose sum is σ = 1220222042102. Its totient is φ = 1220222042100.

The previous prime is 1220222042023. The next prime is 1220222042159. The reversal of 1220222042101 is 1012402220221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1022576000625 + 197646041476 = 1011225^2 + 444574^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220222042101 - 2²³ = 1220213653493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220222042201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610111021050 + 610111021051.

It is an arithmetic number, because the mean of its divisors is an integer number (610111021051).

Almost surely, 2^{1220222042101} is an apocalyptic number.

It is an amenable number.

1220222042101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220222042101 is an equidigital number, since it uses as much as digits as its factorization.

1220222042101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1220222042101 its reverse (1012402220221), we get a palindrome (2232624262322).

The spelling of 1220222042101 in words is "one trillion, two hundred twenty billion, two hundred twenty-two million, forty-two thousand, one hundred one".