1021211167253 has 2 divisors, whose sum is σ = 1021211167254. Its totient is φ = 1021211167252.

The previous prime is 1021211167247. The next prime is 1021211167279. The reversal of 1021211167253 is 3527611121201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 700666095364 + 320545071889 = 837058^2 + 566167^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021211167253 - 2⁶ = 1021211167189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021211161253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510605583626 + 510605583627.

It is an arithmetic number, because the mean of its divisors is an integer number (510605583627).

Almost surely, 2^{1021211167253} is an apocalyptic number.

It is an amenable number.

1021211167253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021211167253 is an equidigital number, since it uses as much as digits as its factorization.

1021211167253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 1021211167253 its reverse (3527611121201), we get a palindrome (4548822288454).

The spelling of 1021211167253 in words is "one trillion, twenty-one billion, two hundred eleven million, one hundred sixty-seven thousand, two hundred fifty-three".