122002020020221 has 4 divisors (see below), whose sum is σ = 133093112749344. Its totient is φ = 110910927291100.

The previous prime is 122002020020191. The next prime is 122002020020239. The reversal of 122002020020221 is 122020020200221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122002020020221 - 2¹⁵ = 122002019987453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122002020020195 and 122002020020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002020020821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5545546364545 + ... + 5545546364566.

It is an arithmetic number, because the mean of its divisors is an integer number (33273278187336).

Almost surely, 2^{122002020020221} is an apocalyptic number.

122002020020221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122002020020221 is a deficient number, since it is larger than the sum of its proper divisors (11091092729123).

122002020020221 is a wasteful number, since it uses less digits than its factorization.

122002020020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11091092729122.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 122002020020221 its reverse (122020020200221), we get a palindrome (244022040220442).

The spelling of 122002020020221 in words is "one hundred twenty-two trillion, two billion, twenty million, twenty thousand, two hundred twenty-one".