1212211220293 has 2 divisors, whose sum is σ = 1212211220294. Its totient is φ = 1212211220292.

The previous prime is 1212211220291. The next prime is 1212211220357. The reversal of 1212211220293 is 3920221122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 845189712964 + 367021507329 = 919342^2 + 605823^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212211220293 - 2¹ = 1212211220291 is a prime.

Together with 1212211220291, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212211220291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105610146 + 606105610147.

It is an arithmetic number, because the mean of its divisors is an integer number (606105610147).

Almost surely, 2^{1212211220293} is an apocalyptic number.

It is an amenable number.

1212211220293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212211220293 is an equidigital number, since it uses as much as digits as its factorization.

1212211220293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 1212211220293 in words is "one trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, two hundred ninety-three".