1210021012011 has 16 divisors (see below), whose sum is σ = 1843919477504. Its totient is φ = 691411352544.

The previous prime is 1210021011971. The next prime is 1210021012021. The reversal of 1210021012011 is 1102101200121.

It is not a de Polignac number, because 1210021012011 - 2¹⁰ = 1210021010987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210021012021) 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 in 15 ways as a sum of consecutive naturals, for example, 704041 + ... + 1707546.

It is an arithmetic number, because the mean of its divisors is an integer number (115244967344).

Almost surely, 2^{1210021012011} is an apocalyptic number.

1210021012011 is a deficient number, since it is larger than the sum of its proper divisors (633898465493).

1210021012011 is a wasteful number, since it uses less digits than its factorization.

1210021012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435490.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210021012011 its reverse (1102101200121), we get a palindrome (2312122212132).

The spelling of 1210021012011 in words is "one trillion, two hundred ten billion, twenty-one million, twelve thousand, eleven".