1020011120021 has 8 divisors (see below), whose sum is σ = 1020701469984. Its totient is φ = 1019320966800.

The previous prime is 1020011119997. The next prime is 1020011120053. The reversal of 1020011120021 is 1200211100201.

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 1020011120021 - 2¹⁴ = 1020011103637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020011119984 and 1020011120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020011122021) 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 7 ways as a sum of consecutive naturals, for example, 11175671 + ... + 11266571.

It is an arithmetic number, because the mean of its divisors is an integer number (127587683748).

Almost surely, 2^{1020011120021} is an apocalyptic number.

It is an amenable number.

1020011120021 is a deficient number, since it is larger than the sum of its proper divisors (690349963).

1020011120021 is an equidigital number, since it uses as much as digits as its factorization.

1020011120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98371.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1020011120021 its reverse (1200211100201), we get a palindrome (2220222220222).

The spelling of 1020011120021 in words is "one trillion, twenty billion, eleven million, one hundred twenty thousand, twenty-one".