3123145401121 has 4 divisors (see below), whose sum is σ = 3129506186544. Its totient is φ = 3116784615700.

The previous prime is 3123145401067. The next prime is 3123145401127. The reversal of 3123145401121 is 1211045413213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3123145401121 - 2¹⁹ = 3123144876833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3123145401121.

It is not an unprimeable number, because it can be changed into a prime (3123145401127) 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, 3180391975 + ... + 3180392956.

It is an arithmetic number, because the mean of its divisors is an integer number (782376546636).

Almost surely, 2^{3123145401121} is an apocalyptic number.

It is an amenable number.

3123145401121 is a deficient number, since it is larger than the sum of its proper divisors (6360785423).

3123145401121 is an equidigital number, since it uses as much as digits as its factorization.

3123145401121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360785422.

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 3123145401121 in words is "three trillion, one hundred twenty-three billion, one hundred forty-five million, four hundred one thousand, one hundred twenty-one".