1202111121031 has 2 divisors, whose sum is σ = 1202111121032. Its totient is φ = 1202111121030.

The previous prime is 1202111121023. The next prime is 1202111121041. The reversal of 1202111121031 is 1301211112021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1202111121031 - 2³ = 1202111121023 is a prime.

It is a super-2 number, since 2×1202111121031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1202111120996 and 1202111121014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202111121041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601055560515 + 601055560516.

It is an arithmetic number, because the mean of its divisors is an integer number (601055560516).

Almost surely, 2^{1202111121031} is an apocalyptic number.

1202111121031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202111121031 is an equidigital number, since it uses as much as digits as its factorization.

1202111121031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1202111121031 its reverse (1301211112021), we get a palindrome (2503322233052).

The spelling of 1202111121031 in words is "one trillion, two hundred two billion, one hundred eleven million, one hundred twenty-one thousand, thirty-one".