121211120001229 has 2 divisors, whose sum is σ = 121211120001230. Its totient is φ = 121211120001228.

The previous prime is 121211120001203. The next prime is 121211120001271. The reversal of 121211120001229 is 922100021112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114508768569129 + 6702351432100 = 10700877^2 + 2588890^2 .

It is an emirp because it is prime and its reverse (922100021112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121211120001229 - 2¹³ = 121211119993037 is a prime.

It is a super-2 number, since 2×121211120001229² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121211120001289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605560000614 + 60605560000615.

It is an arithmetic number, because the mean of its divisors is an integer number (60605560000615).

Almost surely, 2^{121211120001229} is an apocalyptic number.

It is an amenable number.

121211120001229 is a deficient number, since it is larger than the sum of its proper divisors (1).

121211120001229 is an equidigital number, since it uses as much as digits as its factorization.

121211120001229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 121211120001229 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred twenty million, one thousand, two hundred twenty-nine".