221012262210121 has 8 divisors (see below), whose sum is σ = 221079956789664. Its totient is φ = 220944574985280.

The previous prime is 221012262210119. The next prime is 221012262210137. The reversal of 221012262210121 is 121012262210122.

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 221012262210121 - 2¹ = 221012262210119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012262210101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58575130 + ... + 62233996.

It is an arithmetic number, because the mean of its divisors is an integer number (27634994598708).

Almost surely, 2^{221012262210121} is an apocalyptic number.

It is an amenable number.

221012262210121 is a deficient number, since it is larger than the sum of its proper divisors (67694579543).

221012262210121 is a wasteful number, since it uses less digits than its factorization.

221012262210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677351.

The product of its (nonzero) digits is 768, while the sum is 25.

Subtracting from 221012262210121 its reverse (121012262210122), we obtain a palindrome (99999999999999).

The spelling of 221012262210121 in words is "two hundred twenty-one trillion, twelve billion, two hundred sixty-two million, two hundred ten thousand, one hundred twenty-one".