121444031 has 4 divisors (see below), whose sum is σ = 121569312. Its totient is φ = 121318752.

The previous prime is 121444013. The next prime is 121444033. The reversal of 121444031 is 130444121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121444031 is a prime.

It is a super-2 number, since 2×121444031² = 29497305331057922, 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 = 121443994 and 121444012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121444033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61175 + ... + 63128.

It is an arithmetic number, because the mean of its divisors is an integer number (30392328).

Almost surely, 2^121444031 is an apocalyptic number.

121444031 is a deficient number, since it is larger than the sum of its proper divisors (125281).

121444031 is an equidigital number, since it uses as much as digits as its factorization.

121444031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125280.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 121444031 is about 11020.1647446851. The cubic root of 121444031 is about 495.2130239801.

Adding to 121444031 its reverse (130444121), we get a palindrome (251888152).

The spelling of 121444031 in words is "one hundred twenty-one million, four hundred forty-four thousand, thirty-one".