121031002233181 has 2 divisors, whose sum is σ = 121031002233182. Its totient is φ = 121031002233180.

The previous prime is 121031002233049. The next prime is 121031002233191. The reversal of 121031002233181 is 181332200130121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116745129277956 + 4285872955225 = 10804866^2 + 2070235^2 .

It is an emirp because it is prime and its reverse (181332200130121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121031002233181 - 2⁹ = 121031002232669 is a prime.

It is a super-2 number, since 2×121031002233181² (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 (121031002233191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60515501116590 + 60515501116591.

It is an arithmetic number, because the mean of its divisors is an integer number (60515501116591).

Almost surely, 2^{121031002233181} is an apocalyptic number.

It is an amenable number.

121031002233181 is a deficient number, since it is larger than the sum of its proper divisors (1).

121031002233181 is an equidigital number, since it uses as much as digits as its factorization.

121031002233181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 121031002233181 in words is "one hundred twenty-one trillion, thirty-one billion, two million, two hundred thirty-three thousand, one hundred eighty-one".