201121120021211 has 16 divisors (see below), whose sum is σ = 221032539184800. Its totient is φ = 181878203416320.

The previous prime is 201121120021121. The next prime is 201121120021229. The reversal of 201121120021211 is 112120021121102.

It is a cyclic number.

It is not a de Polignac number, because 201121120021211 - 2⁴² = 196723073510107 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 201121120021211.

It is not an unprimeable number, because it can be changed into a prime (201121120024211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711031505 + ... + 711314306.

It is an arithmetic number, because the mean of its divisors is an integer number (13814533699050).

Almost surely, 2^{201121120021211} is an apocalyptic number.

201121120021211 is a deficient number, since it is larger than the sum of its proper divisors (19911419163589).

201121120021211 is a wasteful number, since it uses less digits than its factorization.

201121120021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422346046.

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

Adding to 201121120021211 its reverse (112120021121102), we get a palindrome (313241141142313).

The spelling of 201121120021211 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty million, twenty-one thousand, two hundred eleven".