122211202021 has 4 divisors (see below), whose sum is σ = 122415228000. Its totient is φ = 122007176044.

The previous prime is 122211202019. The next prime is 122211202081. The reversal of 122211202021 is 120202112221.

It is a happy number.

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 122211202021 - 2¹ = 122211202019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122211201986 and 122211202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211202081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102012091 + ... + 102013288.

It is an arithmetic number, because the mean of its divisors is an integer number (30603807000).

Almost surely, 2^122211202021 is an apocalyptic number.

It is an amenable number.

122211202021 is a deficient number, since it is larger than the sum of its proper divisors (204025979).

122211202021 is an equidigital number, since it uses as much as digits as its factorization.

122211202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204025978.

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

Adding to 122211202021 its reverse (120202112221), we get a palindrome (242413314242).

It can be divided in two parts, 12221 and 1202021, that multiplied together give a palindrome (14689898641).

The spelling of 122211202021 in words is "one hundred twenty-two billion, two hundred eleven million, two hundred two thousand, twenty-one".