1011022121201 has 2 divisors, whose sum is σ = 1011022121202. Its totient is φ = 1011022121200.

The previous prime is 1011022121101. The next prime is 1011022121209. The reversal of 1011022121201 is 1021212201101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812159637601 + 198862483600 = 901199^2 + 445940^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011022121201 - 2¹⁰ = 1011022120177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011022121209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505511060600 + 505511060601.

It is an arithmetic number, because the mean of its divisors is an integer number (505511060601).

Almost surely, 2^{1011022121201} is an apocalyptic number.

It is an amenable number.

1011022121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011022121201 is an equidigital number, since it uses as much as digits as its factorization.

1011022121201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011022121201 its reverse (1021212201101), we get a palindrome (2032234322302).

The spelling of 1011022121201 in words is "one trillion, eleven billion, twenty-two million, one hundred twenty-one thousand, two hundred one".