122111111202221 has 8 divisors (see below), whose sum is σ = 122123467006464. Its totient is φ = 122098756048560.

The previous prime is 122111111202211. The next prime is 122111111202233. The reversal of 122111111202221 is 122202111111221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122111111202221 is a prime.

It is a super-2 number, since 2×122111111202221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122111111202193 and 122111111202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122111111202211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431067596 + ... + 431350778.

It is an arithmetic number, because the mean of its divisors is an integer number (15265433375808).

Almost surely, 2^{122111111202221} is an apocalyptic number.

It is an amenable number.

122111111202221 is a deficient number, since it is larger than the sum of its proper divisors (12355804243).

122111111202221 is a wasteful number, since it uses less digits than its factorization.

122111111202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325291.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122111111202221 its reverse (122202111111221), we get a palindrome (244313222313442).

The spelling of 122111111202221 in words is "one hundred twenty-two trillion, one hundred eleven billion, one hundred eleven million, two hundred two thousand, two hundred twenty-one".