1031120221001 has 4 divisors (see below), whose sum is σ = 1110437161092. Its totient is φ = 951803280912.

The previous prime is 1031120220983. The next prime is 1031120221013. The reversal of 1031120221001 is 1001220211301.

1031120221001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61484161600 + 969636059401 = 247960^2 + 984701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1031120221001 - 2¹⁰ = 1031120219977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031120221031) 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, 39658470026 + ... + 39658470051.

It is an arithmetic number, because the mean of its divisors is an integer number (277609290273).

Almost surely, 2^{1031120221001} is an apocalyptic number.

It is an amenable number.

1031120221001 is a deficient number, since it is larger than the sum of its proper divisors (79316940091).

1031120221001 is an equidigital number, since it uses as much as digits as its factorization.

1031120221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79316940090.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1031120221001 its reverse (1001220211301), we get a palindrome (2032340432302).

The spelling of 1031120221001 in words is "one trillion, thirty-one billion, one hundred twenty million, two hundred twenty-one thousand, one".