10221121031 has 4 divisors (see below), whose sum is σ = 11150313864. Its totient is φ = 9291928200.

The previous prime is 10221121007. The next prime is 10221121037. The reversal of 10221121031 is 13012112201.

10221121031 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, and also an emirpimes, since its reverse is a distinct semiprime: 13012112201 = 11 ⋅1182919291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10221121031 is a prime.

It is a super-2 number, since 2×10221121031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10221120997 and 10221121015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221121037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464596400 + ... + 464596421.

It is an arithmetic number, because the mean of its divisors is an integer number (2787578466).

Almost surely, 2^10221121031 is an apocalyptic number.

10221121031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10221121031 is a deficient number, since it is larger than the sum of its proper divisors (929192833).

10221121031 is an equidigital number, since it uses as much as digits as its factorization.

10221121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929192832.

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

Adding to 10221121031 its reverse (13012112201), we get a palindrome (23233233232).

The spelling of 10221121031 in words is "ten billion, two hundred twenty-one million, one hundred twenty-one thousand, thirty-one".