1212100201231 has 2 divisors, whose sum is σ = 1212100201232. Its totient is φ = 1212100201230.

The previous prime is 1212100201199. The next prime is 1212100201237. The reversal of 1212100201231 is 1321020012121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1212100201231 - 2⁵ = 1212100201199 is a prime.

It is a super-2 number, since 2×1212100201231² (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 (1212100201237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050100615 + 606050100616.

It is an arithmetic number, because the mean of its divisors is an integer number (606050100616).

Almost surely, 2^{1212100201231} is an apocalyptic number.

1212100201231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212100201231 is an equidigital number, since it uses as much as digits as its factorization.

1212100201231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1212100201231 its reverse (1321020012121), we get a palindrome (2533120213352).

The spelling of 1212100201231 in words is "one trillion, two hundred twelve billion, one hundred million, two hundred one thousand, two hundred thirty-one".