201011011012221 has 8 divisors (see below), whose sum is σ = 268016092883904. Its totient is φ = 134006634907680.

The previous prime is 201011011012213. The next prime is 201011011012303. The reversal of 201011011012221 is 122210110110102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201011011012221 - 2³ = 201011011012213 is a prime.

It is a super-2 number, since 2×201011011012221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201011011012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011011011221) 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, 175776865 + ... + 176916726.

It is an arithmetic number, because the mean of its divisors is an integer number (33502011610488).

Almost surely, 2^{201011011012221} is an apocalyptic number.

It is an amenable number.

201011011012221 is a deficient number, since it is larger than the sum of its proper divisors (67005081871683).

201011011012221 is a wasteful number, since it uses less digits than its factorization.

201011011012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352883571.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201011011012221 its reverse (122210110110102), we get a palindrome (323221121122323).

The spelling of 201011011012221 in words is "two hundred one trillion, eleven billion, eleven million, twelve thousand, two hundred twenty-one".