121220020022 has 4 divisors (see below), whose sum is σ = 181830030036. Its totient is φ = 60610010010.

The previous prime is 121220019997. The next prime is 121220020087. The reversal of 121220020022 is 220020022121.

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 = 121220019979 and 121220020006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30305005004 + ... + 30305005007.

It is an arithmetic number, because the mean of its divisors is an integer number (45457507509).

Almost surely, 2^121220020022 is an apocalyptic number.

121220020022 is a deficient number, since it is larger than the sum of its proper divisors (60610010014).

121220020022 is an equidigital number, since it uses as much as digits as its factorization.

121220020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60610010013.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 121220020022 its reverse (220020022121), we get a palindrome (341240042143).

It can be divided in two parts, 121 and 220020022, that multiplied together give a palindrome (26622422662).

The spelling of 121220020022 in words is "one hundred twenty-one billion, two hundred twenty million, twenty thousand, twenty-two".