1021022012011 has 4 divisors (see below), whose sum is σ = 1022033927800. Its totient is φ = 1020010096224.

The previous prime is 1021022011987. The next prime is 1021022012053. The reversal of 1021022012011 is 1102102201201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021022012011 - 2²⁵ = 1020988457579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021022011982 and 1021022012000.

It is not an unprimeable number, because it can be changed into a prime (1021022012411) 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 3 ways as a sum of consecutive naturals, for example, 505956381 + ... + 505958398.

It is an arithmetic number, because the mean of its divisors is an integer number (255508481950).

Almost surely, 2^{1021022012011} is an apocalyptic number.

1021022012011 is a deficient number, since it is larger than the sum of its proper divisors (1011915789).

1021022012011 is a wasteful number, since it uses less digits than its factorization.

1021022012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011915788.

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

Adding to 1021022012011 its reverse (1102102201201), we get a palindrome (2123124213212).

The spelling of 1021022012011 in words is "one trillion, twenty-one billion, twenty-two million, twelve thousand, eleven".