201021322011 has 32 divisors (see below), whose sum is σ = 279222064128. Its totient is φ = 128532096000.

The previous prime is 201021321923. The next prime is 201021322031. The reversal of 201021322011 is 110223120102.

It is not a de Polignac number, because 201021322011 - 2⁹ = 201021321499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201021322031) 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, 2665326 + ... + 2739708.

It is an arithmetic number, because the mean of its divisors is an integer number (8725689504).

Almost surely, 2^201021322011 is an apocalyptic number.

201021322011 is a deficient number, since it is larger than the sum of its proper divisors (78200742117).

201021322011 is a wasteful number, since it uses less digits than its factorization.

201021322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74771.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201021322011 its reverse (110223120102), we get a palindrome (311244442113).

The spelling of 201021322011 in words is "two hundred one billion, twenty-one million, three hundred twenty-two thousand, eleven".