1022020121011 has 4 divisors (see below), whose sum is σ = 1022155549272. Its totient is φ = 1021884692752.

The previous prime is 1022020120997. The next prime is 1022020121071. The reversal of 1022020121011 is 1101210202201.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1022020121011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1022020120982 and 1022020121000.

It is not an unprimeable number, because it can be changed into a prime (1022020121071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67702810 + ... + 67717903.

It is an arithmetic number, because the mean of its divisors is an integer number (255538887318).

Almost surely, 2^{1022020121011} is an apocalyptic number.

1022020121011 is a deficient number, since it is larger than the sum of its proper divisors (135428261).

1022020121011 is an equidigital number, since it uses as much as digits as its factorization.

1022020121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135428260.

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

Adding to 1022020121011 its reverse (1101210202201), we get a palindrome (2123230323212).

The spelling of 1022020121011 in words is "one trillion, twenty-two billion, twenty million, one hundred twenty-one thousand, eleven".