1011123203011 has 8 divisors (see below), whose sum is σ = 1020637792944. Its totient is φ = 1001618553600.

The previous prime is 1011123202997. The next prime is 1011123203087. The reversal of 1011123203011 is 1103023211101.

It is a happy number.

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 1011123203011 - 2¹⁵ = 1011123170243 is a prime.

It is a super-3 number, since 3×1011123203011³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011123203711) 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, 2280661 + ... + 2687686.

It is an arithmetic number, because the mean of its divisors is an integer number (127579724118).

Almost surely, 2^{1011123203011} is an apocalyptic number.

1011123203011 is a deficient number, since it is larger than the sum of its proper divisors (9514589933).

1011123203011 is a wasteful number, since it uses less digits than its factorization.

1011123203011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970261.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1011123203011 its reverse (1103023211101), we get a palindrome (2114146414112).

The spelling of 1011123203011 in words is "one trillion, eleven billion, one hundred twenty-three million, two hundred three thousand, eleven".