1010213122021 has 4 divisors (see below), whose sum is σ = 1010221809100. Its totient is φ = 1010204434944.

The previous prime is 1010213121991. The next prime is 1010213122043. The reversal of 1010213122021 is 1202213120101.

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 424354530625 + 585858591396 = 651425^2 + 765414^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010213122021 - 2⁷ = 1010213121893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010213121986 and 1010213122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010213122621) 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, 4166706 + ... + 4402483.

It is an arithmetic number, because the mean of its divisors is an integer number (252555452275).

Almost surely, 2^{1010213122021} is an apocalyptic number.

It is an amenable number.

1010213122021 is a deficient number, since it is larger than the sum of its proper divisors (8687079).

1010213122021 is an equidigital number, since it uses as much as digits as its factorization.

1010213122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8687078.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1010213122021 its reverse (1202213120101), we get a palindrome (2212426242122).

The spelling of 1010213122021 in words is "one trillion, ten billion, two hundred thirteen million, one hundred twenty-two thousand, twenty-one".