1111002121 has 8 divisors (see below), whose sum is σ = 1145879424. Its totient is φ = 1076593200.

The previous prime is 1111002103. The next prime is 1111002131. The reversal of 1111002121 is 1212001111.

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 1111002121 - 2⁹ = 1111001609 is a prime.

It is a Duffinian number.

1111002121 is a modest number, since divided by 2121 gives 1111 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1111002098 and 1111002107.

It is not an unprimeable number, because it can be changed into a prime (1111002131) 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, 112275 + ... + 121768.

It is an arithmetic number, because the mean of its divisors is an integer number (143234928).

Almost surely, 2^1111002121 is an apocalyptic number.

It is an amenable number.

1111002121 is a deficient number, since it is larger than the sum of its proper divisors (34877303).

1111002121 is a wasteful number, since it uses less digits than its factorization.

1111002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234191.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1111002121 is about 33331.6984415736. The cubic root of 1111002121 is about 1035.7103017823.

Adding to 1111002121 its reverse (1212001111), we get a palindrome (2323003232).

The spelling of 1111002121 in words is "one billion, one hundred eleven million, two thousand, one hundred twenty-one".