121220112021222 has 16 divisors (see below), whose sum is σ = 242441102856960. Its totient is φ = 40406557537992.

The previous prime is 121220112021119. The next prime is 121220112021227. The reversal of 121220112021222 is 222120211022121.

It is a super-2 number, since 2×121220112021222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220112021227) 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, 34817298 + ... + 38140325.

It is an arithmetic number, because the mean of its divisors is an integer number (15152568928560).

Almost surely, 2^{121220112021222} is an apocalyptic number.

121220112021222 is an abundant number, since it is smaller than the sum of its proper divisors (121220990835738).

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

121220112021222 is a wasteful number, since it uses less digits than its factorization.

121220112021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73234547.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121220112021222 its reverse (222120211022121), we get a palindrome (343340323043343).

The spelling of 121220112021222 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred twelve million, twenty-one thousand, two hundred twenty-two".