10201220121 has 8 divisors (see below), whose sum is σ = 13613032800. Its totient is φ = 6795110432.

The previous prime is 10201220083. The next prime is 10201220129. The reversal of 10201220121 is 12102210201.

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 10201220121 - 2¹⁷ = 10201089049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10201220097 and 10201220106.

It is not an unprimeable number, because it can be changed into a prime (10201220129) 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, 1421571 + ... + 1428728.

It is an arithmetic number, because the mean of its divisors is an integer number (1701629100).

Almost surely, 2^10201220121 is an apocalyptic number.

It is an amenable number.

10201220121 is a deficient number, since it is larger than the sum of its proper divisors (3411812679).

10201220121 is a wasteful number, since it uses less digits than its factorization.

10201220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851495.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10201220121 its reverse (12102210201), we get a palindrome (22303430322).

The spelling of 10201220121 in words is "ten billion, two hundred one million, two hundred twenty thousand, one hundred twenty-one".