122221210122001 has 16 divisors (see below), whose sum is σ = 136223082927360. Its totient is φ = 108976385145600.

The previous prime is 122221210121987. The next prime is 122221210122041. The reversal of 122221210122001 is 100221012122221.

It is not a de Polignac number, because 122221210122001 - 2¹⁵ = 122221210089233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 122221210122001.

It is not an unprimeable number, because it can be changed into a prime (122221210122041) 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, 33115555 + ... + 36620791.

It is an arithmetic number, because the mean of its divisors is an integer number (8513942682960).

Almost surely, 2^{122221210122001} is an apocalyptic number.

It is an amenable number.

122221210122001 is a deficient number, since it is larger than the sum of its proper divisors (14001872805359).

122221210122001 is a wasteful number, since it uses less digits than its factorization.

122221210122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613224.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122221210122001 its reverse (100221012122221), we get a palindrome (222442222244222).

The spelling of 122221210122001 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, one".