120200020212121 has 16 divisors (see below), whose sum is σ = 121686620290560. Its totient is φ = 118719409939200.

The previous prime is 120200020212119. The next prime is 120200020212197. The reversal of 120200020212121 is 121212020002021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 120200020212121 - 2¹ = 120200020212119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120200020212095 and 120200020212104.

It is not an unprimeable number, because it can be changed into a prime (120200020212821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136619206 + ... + 137496208.

It is an arithmetic number, because the mean of its divisors is an integer number (7605413768160).

Almost surely, 2^{120200020212121} is an apocalyptic number.

It is an amenable number.

120200020212121 is a deficient number, since it is larger than the sum of its proper divisors (1486600078439).

120200020212121 is a wasteful number, since it uses less digits than its factorization.

120200020212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880416.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120200020212121 its reverse (121212020002021), we get a palindrome (241412040214142).

The spelling of 120200020212121 in words is "one hundred twenty trillion, two hundred billion, twenty million, two hundred twelve thousand, one hundred twenty-one".