1101022020021 has 32 divisors (see below), whose sum is σ = 1830324243456. Its totient is φ = 571942656000.

The previous prime is 1101022020017. The next prime is 1101022020031. The reversal of 1101022020021 is 1200202201011.

It is not a de Polignac number, because 1101022020021 - 2² = 1101022020017 is a prime.

It is a super-2 number, since 2×1101022020021² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1101022019979 and 1101022020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101022020031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13294581 + ... + 13377141.

It is an arithmetic number, because the mean of its divisors is an integer number (57197632608).

Almost surely, 2^{1101022020021} is an apocalyptic number.

1101022020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101022020021 is a deficient number, since it is larger than the sum of its proper divisors (729302223435).

1101022020021 is a wasteful number, since it uses less digits than its factorization.

1101022020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140313.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1101022020021 its reverse (1200202201011), we get a palindrome (2301224221032).

The spelling of 1101022020021 in words is "one trillion, one hundred one billion, twenty-two million, twenty thousand, twenty-one".