201102211210121 has 8 divisors (see below), whose sum is σ = 216572752140360. Its totient is φ = 185631833146752.

The previous prime is 201102211210099. The next prime is 201102211210123. The reversal of 201102211210121 is 121012112201102.

It can be written as a sum of positive squares in 4 ways, for example, as 93196549514896 + 107905661695225 = 9653836^2 + 10387765^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201102211210121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201102211210121.

It is not an unprimeable number, because it can be changed into a prime (201102211210123) 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, 38146190 + ... + 43096823.

It is an arithmetic number, because the mean of its divisors is an integer number (27071594017545).

Almost surely, 2^{201102211210121} is an apocalyptic number.

It is an amenable number.

201102211210121 is a deficient number, since it is larger than the sum of its proper divisors (15470540930239).

201102211210121 is a wasteful number, since it uses less digits than its factorization.

201102211210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81433435.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 201102211210121 its reverse (121012112201102), we get a palindrome (322114323411223).

The spelling of 201102211210121 in words is "two hundred one trillion, one hundred two billion, two hundred eleven million, two hundred ten thousand, one hundred twenty-one".