126212293121 has 2 divisors, whose sum is σ = 126212293122. Its totient is φ = 126212293120.

The previous prime is 126212293093. The next prime is 126212293177. The reversal of 126212293121 is 121392212621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72821721025 + 53390572096 = 269855^2 + 231064^2 .

It is an emirp because it is prime and its reverse (121392212621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126212293121 - 2¹⁰ = 126212292097 is a prime.

It is a super-2 number, since 2×126212293121² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126212292121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63106146560 + 63106146561.

It is an arithmetic number, because the mean of its divisors is an integer number (63106146561).

Almost surely, 2^126212293121 is an apocalyptic number.

It is an amenable number.

126212293121 is a deficient number, since it is larger than the sum of its proper divisors (1).

126212293121 is an equidigital number, since it uses as much as digits as its factorization.

126212293121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 32.

The spelling of 126212293121 in words is "one hundred twenty-six billion, two hundred twelve million, two hundred ninety-three thousand, one hundred twenty-one".