1011020212021 has 8 divisors (see below), whose sum is σ = 1030233144024. Its totient is φ = 991812357120.

The previous prime is 1011020212003. The next prime is 1011020212079. The reversal of 1011020212021 is 1202120201101.

It can be written as a sum of positive squares in 4 ways, for example, as 246070563025 + 764949648996 = 496055^2 + 874614^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1011020212021 - 2¹¹ = 1011020209973 is a prime.

It is a super-2 number, since 2×1011020212021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011020211992 and 1011020212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011020212421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866020 + ... + 1664941.

It is an arithmetic number, because the mean of its divisors is an integer number (128779143003).

Almost surely, 2^{1011020212021} is an apocalyptic number.

It is an amenable number.

1011020212021 is a deficient number, since it is larger than the sum of its proper divisors (19212932003).

1011020212021 is an equidigital number, since it uses as much as digits as its factorization.

1011020212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538551.

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

Adding to 1011020212021 its reverse (1202120201101), we get a palindrome (2213140413122).

The spelling of 1011020212021 in words is "one trillion, eleven billion, twenty million, two hundred twelve thousand, twenty-one".