22220212200121 has 16 divisors (see below), whose sum is σ = 24439621248000. Its totient is φ = 20073720022848.

The previous prime is 22220212200089. The next prime is 22220212200149. The reversal of 22220212200121 is 12100221202222.

It is a cyclic number.

It is not a de Polignac number, because 22220212200121 - 2⁵ = 22220212200089 is a prime.

It is a super-2 number, since 2×22220212200121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22220212207121) 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, 14059855 + ... + 15560203.

It is an arithmetic number, because the mean of its divisors is an integer number (1527476328000).

Almost surely, 2^{22220212200121} is an apocalyptic number.

It is an amenable number.

22220212200121 is a deficient number, since it is larger than the sum of its proper divisors (2219409047879).

22220212200121 is a wasteful number, since it uses less digits than its factorization.

22220212200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524648.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22220212200121 its reverse (12100221202222), we get a palindrome (34320433402343).

The spelling of 22220212200121 in words is "twenty-two trillion, two hundred twenty billion, two hundred twelve million, two hundred thousand, one hundred twenty-one".