1031000120221 has 8 divisors (see below), whose sum is σ = 1050536370744. Its totient is φ = 1011466959360.

The previous prime is 1031000120201. The next prime is 1031000120233. The reversal of 1031000120221 is 1220210001301.

1031000120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 301878819225 + 729121300996 = 549435^2 + 853886^2 .

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 1031000120221 - 2²³ = 1030991731613 is a prime.

It is a super-3 number, since 3×1031000120221³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031000120201) 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, 93100 + ... + 1438981.

It is an arithmetic number, because the mean of its divisors is an integer number (131317046343).

Almost surely, 2^{1031000120221} is an apocalyptic number.

It is an amenable number.

1031000120221 is a deficient number, since it is larger than the sum of its proper divisors (19536250523).

1031000120221 is a wasteful number, since it uses less digits than its factorization.

1031000120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544831.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 1031000120221 its reverse (1220210001301), we get a palindrome (2251210121522).

The spelling of 1031000120221 in words is "one trillion, thirty-one billion, one hundred twenty thousand, two hundred twenty-one".