11012011021 has 8 divisors (see below), whose sum is σ = 12044473344. Its totient is φ = 9984777120.

The previous prime is 11012011019. The next prime is 11012011027. The reversal of 11012011021 is 12011021011.

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 11012011021 - 2¹ = 11012011019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012010989 and 11012011007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012011027) 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, 1302696 + ... + 1311121.

It is an arithmetic number, because the mean of its divisors is an integer number (1505559168).

Almost surely, 2^11012011021 is an apocalyptic number.

11012011021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012011021 is a deficient number, since it is larger than the sum of its proper divisors (1032462323).

11012011021 is a wasteful number, since it uses less digits than its factorization.

11012011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614211.

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

Adding to 11012011021 its reverse (12011021011), we get a palindrome (23023032032).

The spelling of 11012011021 in words is "eleven billion, twelve million, eleven thousand, twenty-one".