222201120121020 has 144 divisors (see below), whose sum is σ = 719743784497920. Its totient is φ = 55364906419200.

The previous prime is 222201120120997. The next prime is 222201120121021. The reversal of 222201120121020 is 20121021102222.

It is a happy number.

222201120121020 is a `hidden beast` number, since 2 + 2 + 220 + 11 + 201 + 210 + 20 = 666.

222201120121020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 222201120120984 and 222201120121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201120121021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 686406961 + ... + 686730600.

It is an arithmetic number, because the mean of its divisors is an integer number (4998220725680).

Almost surely, 2^{222201120121020} is an apocalyptic number.

222201120121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222201120121020 is an abundant number, since it is smaller than the sum of its proper divisors (497542664376900).

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

222201120121020 is a wasteful number, since it uses less digits than its factorization.

222201120121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373137636 (or 1373137631 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222201120121020 its reverse (20121021102222), we get a palindrome (242322141223242).

The spelling of 222201120121020 in words is "two hundred twenty-two trillion, two hundred one billion, one hundred twenty million, one hundred twenty-one thousand, twenty".