1210213221953 has 2 divisors, whose sum is σ = 1210213221954. Its totient is φ = 1210213221952.

The previous prime is 1210213221941. The next prime is 1210213222013. The reversal of 1210213221953 is 3591223120121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108457325889 + 101755896064 = 1052833^2 + 318992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210213221953 - 2³⁸ = 935335315009 is a prime.

It is a super-2 number, since 2×1210213221953² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1210213224953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605106610976 + 605106610977.

It is an arithmetic number, because the mean of its divisors is an integer number (605106610977).

Almost surely, 2^{1210213221953} is an apocalyptic number.

It is an amenable number.

1210213221953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210213221953 is an equidigital number, since it uses as much as digits as its factorization.

1210213221953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 1210213221953 in words is "one trillion, two hundred ten billion, two hundred thirteen million, two hundred twenty-one thousand, nine hundred fifty-three".