101121031 has 12 divisors (see below), whose sum is σ = 111878536. Its totient is φ = 91325520.

The previous prime is 101121011. The next prime is 101121067. The reversal of 101121031 is 130121101.

It is not a de Polignac number, because 101121031 - 2²¹ = 99023879 is a prime.

It is a super-2 number, since 2×101121031² = 20450925821005922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101120999 and 101121017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101121011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16336 + ... + 21658.

Almost surely, 2^101121031 is an apocalyptic number.

101121031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101121031 is a deficient number, since it is larger than the sum of its proper divisors (10757505).

101121031 is a wasteful number, since it uses less digits than its factorization.

101121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5502 (or 5491 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 10.

The square root of 101121031 is about 10055.8953355731. The cubic root of 101121031 is about 465.8868971582.

Adding to 101121031 its reverse (130121101), we get a palindrome (231242132).

The spelling of 101121031 in words is "one hundred one million, one hundred twenty-one thousand, thirty-one".