23011021011 has 32 divisors (see below), whose sum is σ = 35656750080. Its totient is φ = 13052858400.

The previous prime is 23011021003. The next prime is 23011021021. The reversal of 23011021011 is 11012011032.

It is not a de Polignac number, because 23011021011 - 2³ = 23011021003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23011021021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169045 + ... + 273126.

It is an arithmetic number, because the mean of its divisors is an integer number (1114273440).

Almost surely, 2^23011021011 is an apocalyptic number.

23011021011 is a deficient number, since it is larger than the sum of its proper divisors (12645729069).

23011021011 is a wasteful number, since it uses less digits than its factorization.

23011021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442287.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 23011021011 its reverse (11012011032), we get a palindrome (34023032043).

The spelling of 23011021011 in words is "twenty-three billion, eleven million, twenty-one thousand, eleven".