121221112102022 has 4 divisors (see below), whose sum is σ = 181831668153036. Its totient is φ = 60610556051010.

The previous prime is 121221112102021. The next prime is 121221112102093. The reversal of 121221112102022 is 220201211122121.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 121221112101985 and 121221112102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221112102021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305278025504 + ... + 30305278025507.

It is an arithmetic number, because the mean of its divisors is an integer number (45457917038259).

Almost surely, 2^{121221112102022} is an apocalyptic number.

121221112102022 is a deficient number, since it is larger than the sum of its proper divisors (60610556051014).

121221112102022 is an equidigital number, since it uses as much as digits as its factorization.

121221112102022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60610556051013.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121221112102022 its reverse (220201211122121), we get a palindrome (341422323224143).

The spelling of 121221112102022 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred twelve million, one hundred two thousand, twenty-two".