201233102011 has 4 divisors (see below), whose sum is σ = 203186821552. Its totient is φ = 199279382472.

The previous prime is 201233101973. The next prime is 201233102023. The reversal of 201233102011 is 110201332102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110201332102 = 2 ⋅55100666051.

It is a cyclic number.

It is not a de Polignac number, because 201233102011 - 2³¹ = 199085618363 is a prime.

It is a super-2 number, since 2×201233102011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201233102041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976859616 + ... + 976859821.

It is an arithmetic number, because the mean of its divisors is an integer number (50796705388).

Almost surely, 2^201233102011 is an apocalyptic number.

201233102011 is a deficient number, since it is larger than the sum of its proper divisors (1953719541).

201233102011 is a wasteful number, since it uses less digits than its factorization.

201233102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953719540.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 201233102011 its reverse (110201332102), we get a palindrome (311434434113).

The spelling of 201233102011 in words is "two hundred one billion, two hundred thirty-three million, one hundred two thousand, eleven".