121002031 has 8 divisors (see below), whose sum is σ = 122878080. Its totient is φ = 119139672.

The previous prime is 121002019. The next prime is 121002041. The reversal of 121002031 is 130200121.

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

It is a cyclic number.

It is not a de Polignac number, because 121002031 - 2¹⁹ = 120477743 is a prime.

It is a super-2 number, since 2×121002031² = 29282983012249922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001999 and 121002017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002001) 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, 15156 + ... + 21718.

It is an arithmetic number, because the mean of its divisors is an integer number (15359760).

Almost surely, 2^121002031 is an apocalyptic number.

121002031 is a deficient number, since it is larger than the sum of its proper divisors (1876049).

121002031 is a wasteful number, since it uses less digits than its factorization.

121002031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121002031 is about 11000.0923177944. The cubic root of 121002031 is about 494.6115116657.

Adding to 121002031 its reverse (130200121), we get a palindrome (251202152).

The spelling of 121002031 in words is "one hundred twenty-one million, two thousand, thirty-one".