121222022220220 has 12 divisors (see below), whose sum is σ = 254566246662504. Its totient is φ = 48488808888080.

The previous prime is 121222022220113. The next prime is 121222022220223. The reversal of 121222022220220 is 22022220222121.

It is a super-2 number, since 2×121222022220220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121222022220191 and 121222022220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222022220223) 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, 3030550555486 + ... + 3030550555525.

It is an arithmetic number, because the mean of its divisors is an integer number (21213853888542).

Almost surely, 2^{121222022220220} is an apocalyptic number.

121222022220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222022220220 is an abundant number, since it is smaller than the sum of its proper divisors (133344224442284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121222022220220 is a wasteful number, since it uses less digits than its factorization.

121222022220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061101111020 (or 6061101111018 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 121222022220220 its reverse (22022220222121), we get a palindrome (143244242442341).

The spelling of 121222022220220 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty thousand, two hundred twenty".