121002222200020 has 48 divisors (see below), whose sum is σ = 290406114085248. Its totient is φ = 41486364639360.

The previous prime is 121002222200011. The next prime is 121002222200059. The reversal of 121002222200020 is 20002222200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002222199967 and 121002222200003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64165390 + ... + 66024250.

It is an arithmetic number, because the mean of its divisors is an integer number (6050127376776).

Almost surely, 2^{121002222200020} is an apocalyptic number.

121002222200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002222200020 is an abundant number, since it is smaller than the sum of its proper divisors (169403891885228).

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

121002222200020 is a wasteful number, since it uses less digits than its factorization.

121002222200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323840 (or 2323838 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121002222200020 its reverse (20002222200121), we get a palindrome (141004444400141).

The spelling of 121002222200020 in words is "one hundred twenty-one trillion, two billion, two hundred twenty-two million, two hundred thousand, twenty".