1011121031 has 2 divisors, whose sum is σ = 1011121032. Its totient is φ = 1011121030.

The previous prime is 1011121021. The next prime is 1011121037. The reversal of 1011121031 is 1301211101.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011121031 - 2²² = 1006926727 is a prime.

It is a super-2 number, since 2×1011121031² = 2044731478661005922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011121037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505560515 + 505560516.

It is an arithmetic number, because the mean of its divisors is an integer number (505560516).

Almost surely, 2^1011121031 is an apocalyptic number.

1011121031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011121031 is an equidigital number, since it uses as much as digits as its factorization.

1011121031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 1011121031 is about 31798.1293632188. The cubic root of 1011121031 is about 1003.6933526858.

Adding to 1011121031 its reverse (1301211101), we get a palindrome (2312332132).

The spelling of 1011121031 in words is "one billion, eleven million, one hundred twenty-one thousand, thirty-one".