1021030221123 has 12 divisors (see below), whose sum is σ = 1608896106168. Its totient is φ = 618806194560.

The previous prime is 1021030221121. The next prime is 1021030221143. The reversal of 1021030221123 is 3211220301201.

1021030221123 is a `hidden beast` number, since 10 + 210 + 302 + 21 + 123 = 666.

1021030221123 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021030221123 - 2¹ = 1021030221121 is a prime.

It is a super-2 number, since 2×1021030221123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021030221096 and 1021030221105.

It is not an unprimeable number, because it can be changed into a prime (1021030221121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5156718190 + ... + 5156718387.

It is an arithmetic number, because the mean of its divisors is an integer number (134074675514).

Almost surely, 2^{1021030221123} is an apocalyptic number.

1021030221123 is a deficient number, since it is larger than the sum of its proper divisors (587865885045).

1021030221123 is a wasteful number, since it uses less digits than its factorization.

1021030221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313436594 (or 10313436591 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1021030221123 its reverse (3211220301201), we get a palindrome (4232250522324).

The spelling of 1021030221123 in words is "one trillion, twenty-one billion, thirty million, two hundred twenty-one thousand, one hundred twenty-three".