10211201222121 has 36 divisors (see below), whose sum is σ = 15421323696688. Its totient is φ = 6510373298352.

The previous prime is 10211201222119. The next prime is 10211201222219. The reversal of 10211201222121 is 12122210211201.

10211201222121 is a `hidden beast` number, since 10 + 211 + 201 + 2 + 221 + 21 = 666.

It is not a de Polignac number, because 10211201222121 - 2¹ = 10211201222119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10211201222094 and 10211201222103.

It is not an unprimeable number, because it can be changed into a prime (10211201222821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 28018350 + ... + 28380456.

Almost surely, 2^{10211201222121} is an apocalyptic number.

It is an amenable number.

10211201222121 is a deficient number, since it is larger than the sum of its proper divisors (5210122474567).

10211201222121 is a wasteful number, since it uses less digits than its factorization.

10211201222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368082 (or 368056 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10211201222121 its reverse (12122210211201), we get a palindrome (22333411433322).

The spelling of 10211201222121 in words is "ten trillion, two hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-one".