1021210320213 has 12 divisors (see below), whose sum is σ = 1475436470508. Its totient is φ = 680643081600.

The previous prime is 1021210320211. The next prime is 1021210320259. The reversal of 1021210320213 is 3120230121201.

1021210320213 is a `hidden beast` number, since 10 + 2 + 121 + 0 + 320 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 265176592209 + 756033728004 = 514953^2 + 869502^2 .

It is not a de Polignac number, because 1021210320213 - 2¹ = 1021210320211 is a prime.

It is a super-3 number, since 3×1021210320213³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021210320211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13610388 + ... + 13685213.

It is an arithmetic number, because the mean of its divisors is an integer number (122953039209).

Almost surely, 2^{1021210320213} is an apocalyptic number.

It is an amenable number.

1021210320213 is a deficient number, since it is larger than the sum of its proper divisors (454226150295).

1021210320213 is a wasteful number, since it uses less digits than its factorization.

1021210320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27299764 (or 27299761 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1021210320213 its reverse (3120230121201), we get a palindrome (4141440441414).

The spelling of 1021210320213 in words is "one trillion, twenty-one billion, two hundred ten million, three hundred twenty thousand, two hundred thirteen".