121201102222020 has 72 divisors (see below), whose sum is σ = 377579650006104. Its totient is φ = 31446772466688.

The previous prime is 121201102221977. The next prime is 121201102222021. The reversal of 121201102222020 is 20222201102121.

It is a happy number.

121201102222020 is a `hidden beast` number, since 12 + 120 + 110 + 222 + 202 + 0 = 666.

121201102222020 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 48951068222016 + 72250034000004 = 6996504^2 + 8500002^2 .

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 = 121201102221984 and 121201102222002.

It is not an unprimeable number, because it can be changed into a prime (121201102222021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9099175189 + ... + 9099188508.

Almost surely, 2^{121201102222020} is an apocalyptic number.

121201102222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121201102222020 is an abundant number, since it is smaller than the sum of its proper divisors (256378547784084).

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

121201102222020 is a wasteful number, since it uses less digits than its factorization.

121201102222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18198363749 (or 18198363744 counting only the distinct ones).

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

Adding to 121201102222020 its reverse (20222201102121), we get a palindrome (141423303324141).

The spelling of 121201102222020 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred two million, two hundred twenty-two thousand, twenty".