1021021122011 has 16 divisors (see below), whose sum is σ = 1126879877088. Its totient is φ = 925032745120.

The previous prime is 1021021122001. The next prime is 1021021122019. The reversal of 1021021122011 is 1102211201201.

It is not a de Polignac number, because 1021021122011 - 2⁶ = 1021021121947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021021122019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919076 + ... + 1699041.

It is an arithmetic number, because the mean of its divisors is an integer number (70429992318).

Almost surely, 2^{1021021122011} is an apocalyptic number.

1021021122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021021122011 is a deficient number, since it is larger than the sum of its proper divisors (105858755077).

1021021122011 is an equidigital number, since it uses as much as digits as its factorization.

1021021122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618443 (or 2618421 counting only the distinct ones).

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

Adding to 1021021122011 its reverse (1102211201201), we get a palindrome (2123232323212).

The spelling of 1021021122011 in words is "one trillion, twenty-one billion, twenty-one million, one hundred twenty-two thousand, eleven".