121001431043 has 4 divisors (see below), whose sum is σ = 121004903688. Its totient is φ = 120997958400.

The previous prime is 121001431027. The next prime is 121001431091. The reversal of 121001431043 is 340134100121.

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

It is a cyclic number.

It is not a de Polignac number, because 121001431043 - 2⁴ = 121001431027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121001401043) 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, 1683521 + ... + 1753922.

It is an arithmetic number, because the mean of its divisors is an integer number (30251225922).

Almost surely, 2^121001431043 is an apocalyptic number.

121001431043 is a deficient number, since it is larger than the sum of its proper divisors (3472645).

121001431043 is an equidigital number, since it uses as much as digits as its factorization.

121001431043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472644.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121001431043 its reverse (340134100121), we get a palindrome (461135531164).

The spelling of 121001431043 in words is "one hundred twenty-one billion, one million, four hundred thirty-one thousand, forty-three".