201121020220121 has 8 divisors (see below), whose sum is σ = 201178103580960. Its totient is φ = 201063943628352.

The previous prime is 201121020220073. The next prime is 201121020220231. The reversal of 201121020220121 is 121022020121102.

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

It is a cyclic number.

It is not a de Polignac number, because 201121020220121 - 2⁴⁶ = 130752276042457 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 201121020220121.

It is not an unprimeable number, because it can be changed into a prime (201121020225121) 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, 58038506 + ... + 61406108.

It is an arithmetic number, because the mean of its divisors is an integer number (25147262947620).

Almost surely, 2^{201121020220121} is an apocalyptic number.

It is an amenable number.

201121020220121 is a deficient number, since it is larger than the sum of its proper divisors (57083360839).

201121020220121 is a wasteful number, since it uses less digits than its factorization.

201121020220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3384535.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201121020220121 its reverse (121022020121102), we get a palindrome (322143040341223).

The spelling of 201121020220121 in words is "two hundred one trillion, one hundred twenty-one billion, twenty million, two hundred twenty thousand, one hundred twenty-one".