122221200010021 has 32 divisors (see below), whose sum is σ = 149023460966400. Its totient is φ = 97963580654016.

The previous prime is 122221200009967. The next prime is 122221200010031. The reversal of 122221200010021 is 120010002122221.

It is a happy number.

It is not a de Polignac number, because 122221200010021 - 2⁹ = 122221200009509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122221200009977 and 122221200010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221200010031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2392846 + ... + 15816703.

It is an arithmetic number, because the mean of its divisors is an integer number (4656983155200).

Almost surely, 2^{122221200010021} is an apocalyptic number.

It is an amenable number.

122221200010021 is a deficient number, since it is larger than the sum of its proper divisors (26802260956379).

122221200010021 is a wasteful number, since it uses less digits than its factorization.

122221200010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18210513.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122221200010021 its reverse (120010002122221), we get a palindrome (242231202132242).

The spelling of 122221200010021 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred million, ten thousand, twenty-one".