1012011121 has 8 divisors (see below), whose sum is σ = 1104717600. Its totient is φ = 919422240.

The previous prime is 1012011107. The next prime is 1012011157. The reversal of 1012011121 is 1211102101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1012011121 - 2¹¹ = 1012009073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012011098 and 1012011107.

It is not an unprimeable number, because it can be changed into a prime (1012911121) 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, 10891 + ... + 46288.

It is an arithmetic number, because the mean of its divisors is an integer number (138089700).

Almost surely, 2^1012011121 is an apocalyptic number.

1012011121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012011121 is a deficient number, since it is larger than the sum of its proper divisors (92706479).

1012011121 is a wasteful number, since it uses less digits than its factorization.

1012011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58799.

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

The square root of 1012011121 is about 31812.1222335134. The cubic root of 1012011121 is about 1003.9877834447.

Adding to 1012011121 its reverse (1211102101), we get a palindrome (2223113222).

The spelling of 1012011121 in words is "one billion, twelve million, eleven thousand, one hundred twenty-one".