1021101123 has 16 divisors (see below), whose sum is σ = 1623614976. Its totient is φ = 558117120.

The previous prime is 1021101113. The next prime is 1021101163. The reversal of 1021101123 is 3211011201.

1021101123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021101123 - 2¹⁰ = 1021100099 is a prime.

It is a super-2 number, since 2×1021101123² = 2085295006783722258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021101099 and 1021101108.

It is not an unprimeable number, because it can be changed into a prime (1021101113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056558 + ... + 1057523.

It is an arithmetic number, because the mean of its divisors is an integer number (101475936).

Almost surely, 2^1021101123 is an apocalyptic number.

1021101123 is a deficient number, since it is larger than the sum of its proper divisors (602513853).

1021101123 is a wasteful number, since it uses less digits than its factorization.

1021101123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114114.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1021101123 is about 31954.6729446571. The cubic root of 1021101123 is about 1006.9848065536.

Adding to 1021101123 its reverse (3211011201), we get a palindrome (4232112324).

The spelling of 1021101123 in words is "one billion, twenty-one million, one hundred one thousand, one hundred twenty-three".