1026212301391 has 2 divisors, whose sum is σ = 1026212301392. Its totient is φ = 1026212301390.

The previous prime is 1026212301377. The next prime is 1026212301431. The reversal of 1026212301391 is 1931032126201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1026212301391 - 2⁷ = 1026212301263 is a prime.

It is a super-2 number, since 2×1026212301391² (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 (1026212341391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513106150695 + 513106150696.

It is an arithmetic number, because the mean of its divisors is an integer number (513106150696).

Almost surely, 2^{1026212301391} is an apocalyptic number.

1026212301391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1026212301391 is an equidigital number, since it uses as much as digits as its factorization.

1026212301391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

Adding to 1026212301391 its reverse (1931032126201), we get a palindrome (2957244427592).

The spelling of 1026212301391 in words is "one trillion, twenty-six billion, two hundred twelve million, three hundred one thousand, three hundred ninety-one".