1110020121 has 12 divisors (see below), whose sum is σ = 1832414272. Its totient is φ = 634297176.

The previous prime is 1110020099. The next prime is 1110020129. The reversal of 1110020121 is 1210200111.

It is a happy number.

It is not a de Polignac number, because 1110020121 - 2²¹ = 1107922969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110020129) 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, 8809621 + ... + 8809746.

Almost surely, 2^1110020121 is an apocalyptic number.

It is an amenable number.

1110020121 is a deficient number, since it is larger than the sum of its proper divisors (722394151).

1110020121 is a wasteful number, since it uses less digits than its factorization.

1110020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17619380 (or 17619377 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1110020121 is about 33316.9644625677. The cubic root of 1110020121 is about 1035.4050616446.

Adding to 1110020121 its reverse (1210200111), we get a palindrome (2320220232).

The spelling of 1110020121 in words is "one billion, one hundred ten million, twenty thousand, one hundred twenty-one".