1020110212021 has 6 divisors (see below), whose sum is σ = 1076626013622. Its totient is φ = 966420200520.

The previous prime is 1020110212019. The next prime is 1020110212031. The reversal of 1020110212021 is 1202120110201.

It can be written as a sum of positive squares in only one way, i.e., 892599800625 + 127510411396 = 944775^2 + 357086^2 .

It is not a de Polignac number, because 1020110212021 - 2¹ = 1020110212019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020110211992 and 1020110212010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020110212031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1412894670 + ... + 1412895391.

It is an arithmetic number, because the mean of its divisors is an integer number (179437668937).

Almost surely, 2^{1020110212021} is an apocalyptic number.

It is an amenable number.

1020110212021 is a deficient number, since it is larger than the sum of its proper divisors (56515801601).

1020110212021 is an equidigital number, since it uses as much as digits as its factorization.

1020110212021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2825790099 (or 2825790080 counting only the distinct ones).

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

Adding to 1020110212021 its reverse (1202120110201), we get a palindrome (2222230322222).

The spelling of 1020110212021 in words is "one trillion, twenty billion, one hundred ten million, two hundred twelve thousand, twenty-one".