1012221210901 has 2 divisors, whose sum is σ = 1012221210902. Its totient is φ = 1012221210900.

The previous prime is 1012221210893. The next prime is 1012221210929. The reversal of 1012221210901 is 1090121222101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1008516054001 + 3705156900 = 1004249^2 + 60870^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012221210901 - 2³ = 1012221210893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012221210001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506110605450 + 506110605451.

It is an arithmetic number, because the mean of its divisors is an integer number (506110605451).

Almost surely, 2^{1012221210901} is an apocalyptic number.

It is an amenable number.

1012221210901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012221210901 is an equidigital number, since it uses as much as digits as its factorization.

1012221210901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 1012221210901 in words is "one trillion, twelve billion, two hundred twenty-one million, two hundred ten thousand, nine hundred one".