1201022021011 has 2 divisors, whose sum is σ = 1201022021012. Its totient is φ = 1201022021010.

The previous prime is 1201022020937. The next prime is 1201022021053. The reversal of 1201022021011 is 1101202201021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201022021011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1201022020982 and 1201022021000.

It is not a weakly prime, because it can be changed into another prime (1201022081011) 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, 600511010505 + 600511010506.

It is an arithmetic number, because the mean of its divisors is an integer number (600511010506).

Almost surely, 2^{1201022021011} is an apocalyptic number.

1201022021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201022021011 is an equidigital number, since it uses as much as digits as its factorization.

1201022021011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1201022021011 its reverse (1101202201021), we get a palindrome (2302224222032).

The spelling of 1201022021011 in words is "one trillion, two hundred one billion, twenty-two million, twenty-one thousand, eleven".