1210020021011 has 2 divisors, whose sum is σ = 1210020021012. Its totient is φ = 1210020021010.

The previous prime is 1210020020983. The next prime is 1210020021017. The reversal of 1210020021011 is 1101200200121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210020021011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210020020983 and 1210020021001.

It is not a weakly prime, because it can be changed into another prime (1210020021017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010010505 + 605010010506.

It is an arithmetic number, because the mean of its divisors is an integer number (605010010506).

Almost surely, 2^{1210020021011} is an apocalyptic number.

1210020021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210020021011 is an equidigital number, since it uses as much as digits as its factorization.

1210020021011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1210020021011 its reverse (1101200200121), we get a palindrome (2311220221132).

The spelling of 1210020021011 in words is "one trillion, two hundred ten billion, twenty million, twenty-one thousand, eleven".