1200421212293 has 2 divisors, whose sum is σ = 1200421212294. Its totient is φ = 1200421212292.

The previous prime is 1200421212281. The next prime is 1200421212307. The reversal of 1200421212293 is 3922121240021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779021594884 + 421399617409 = 882622^2 + 649153^2 .

It is an emirp because it is prime and its reverse (3922121240021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200421212293 - 2¹⁸ = 1200420950149 is a prime.

It is a super-2 number, since 2×1200421212293² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200421212223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600210606146 + 600210606147.

It is an arithmetic number, because the mean of its divisors is an integer number (600210606147).

Almost surely, 2^{1200421212293} is an apocalyptic number.

It is an amenable number.

1200421212293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200421212293 is an equidigital number, since it uses as much as digits as its factorization.

1200421212293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 1200421212293 in words is "one trillion, two hundred billion, four hundred twenty-one million, two hundred twelve thousand, two hundred ninety-three".