121012031 has 8 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 103665528.

The previous prime is 121012013. The next prime is 121012037. The reversal of 121012031 is 130210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121012031 is a prime.

It is a super-2 number, since 2×121012031² = 29287823293489922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12230 + ... + 19788.

It is an arithmetic number, because the mean of its divisors is an integer number (17297280).

Almost surely, 2^121012031 is an apocalyptic number.

121012031 is a deficient number, since it is larger than the sum of its proper divisors (17366209).

121012031 is an equidigital number, since it uses as much as digits as its factorization.

121012031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 121012031 is about 11000.5468500434. The cubic root of 121012031 is about 494.6251367232.

Adding to 121012031 its reverse (130210121), we get a palindrome (251222152).

The spelling of 121012031 in words is "one hundred twenty-one million, twelve thousand, thirty-one".