1012010011021 has 4 divisors (see below), whose sum is σ = 1013541040444. Its totient is φ = 1010478981600.

The previous prime is 1012010010889. The next prime is 1012010011063. The reversal of 1012010011021 is 1201100102101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 669303972100 + 342706038921 = 818110^2 + 585411^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012010011021 - 2⁹ = 1012010010509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012010010989 and 1012010011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012010011121) 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, 765513720 + ... + 765515041.

It is an arithmetic number, because the mean of its divisors is an integer number (253385260111).

Almost surely, 2^{1012010011021} is an apocalyptic number.

It is an amenable number.

1012010011021 is a deficient number, since it is larger than the sum of its proper divisors (1531029423).

1012010011021 is an equidigital number, since it uses as much as digits as its factorization.

1012010011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531029422.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1012010011021 its reverse (1201100102101), we get a palindrome (2213110113122).

The spelling of 1012010011021 in words is "one trillion, twelve billion, ten million, eleven thousand, twenty-one".