2122121204120 has 32 divisors (see below), whose sum is σ = 4795806970800. Its totient is φ = 845109057408.

The previous prime is 2122121204101. The next prime is 2122121204141. The reversal of 2122121204120 is 214021212212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2122121204092 and 2122121204101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116847815 + ... + 116865974.

Almost surely, 2^{2122121204120} is an apocalyptic number.

2122121204120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122121204120 is an abundant number, since it is smaller than the sum of its proper divisors (2673685766680).

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

2122121204120 is a wasteful number, since it uses less digits than its factorization.

2122121204120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233714027 (or 233714023 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2122121204120 its reverse (214021212212), we get a palindrome (2336142416332).

The spelling of 2122121204120 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred four thousand, one hundred twenty".