1011220001291 has 2 divisors, whose sum is σ = 1011220001292. Its totient is φ = 1011220001290.

The previous prime is 1011220001287. The next prime is 1011220001339. The reversal of 1011220001291 is 1921000221101.

1011220001291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011220001291 - 2² = 1011220001287 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011220003291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505610000645 + 505610000646.

It is an arithmetic number, because the mean of its divisors is an integer number (505610000646).

Almost surely, 2^{1011220001291} is an apocalyptic number.

1011220001291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011220001291 is an equidigital number, since it uses as much as digits as its factorization.

1011220001291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 1011220001291 its reverse (1921000221101), we get a palindrome (2932220222392).

The spelling of 1011220001291 in words is "one trillion, eleven billion, two hundred twenty million, one thousand, two hundred ninety-one".