201121222111101 has 32 divisors (see below), whose sum is σ = 299068823376000. Its totient is φ = 133580671668864.

The previous prime is 201121222111099. The next prime is 201121222111129. The reversal of 201121222111101 is 101111222121102.

It is a happy number.

201121222111101 is a `hidden beast` number, since 201 + 121 + 22 + 211 + 110 + 1 = 666.

It is not a de Polignac number, because 201121222111101 - 2¹ = 201121222111099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121222111301) 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, 856764121 + ... + 856998833.

It is an arithmetic number, because the mean of its divisors is an integer number (9345900730500).

Almost surely, 2^{201121222111101} is an apocalyptic number.

It is an amenable number.

201121222111101 is a deficient number, since it is larger than the sum of its proper divisors (97947601264899).

201121222111101 is a wasteful number, since it uses less digits than its factorization.

201121222111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352970 (or 352964 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201121222111101 its reverse (101111222121102), we get a palindrome (302232444232203).

The spelling of 201121222111101 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred one".