1012201313021 has 2 divisors, whose sum is σ = 1012201313022. Its totient is φ = 1012201313020.

The previous prime is 1012201312981. The next prime is 1012201313063. The reversal of 1012201313021 is 1203131022101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 721286709796 + 290914603225 = 849286^2 + 539365^2 .

It is an emirp because it is prime and its reverse (1203131022101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1012201313021 - 2⁶ = 1012201312957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012201313521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506100656510 + 506100656511.

It is an arithmetic number, because the mean of its divisors is an integer number (506100656511).

Almost surely, 2^{1012201313021} is an apocalyptic number.

It is an amenable number.

1012201313021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012201313021 is an equidigital number, since it uses as much as digits as its factorization.

1012201313021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1012201313021 its reverse (1203131022101), we get a palindrome (2215332335122).

The spelling of 1012201313021 in words is "one trillion, twelve billion, two hundred one million, three hundred thirteen thousand, twenty-one".