2120121202122 has 64 divisors (see below), whose sum is σ = 5873928883200. Its totient is φ = 550680830640.

The previous prime is 2120121202081. The next prime is 2120121202207. The reversal of 2120121202122 is 2212021210212.

It is a happy number.

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 = 2120121202095 and 2120121202104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254940672 + ... + 254948987.

It is an arithmetic number, because the mean of its divisors is an integer number (91780138800).

Almost surely, 2^{2120121202122} is an apocalyptic number.

2120121202122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2120121202122 is an abundant number, since it is smaller than the sum of its proper divisors (3753807681078).

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

2120121202122 is a wasteful number, since it uses less digits than its factorization.

2120121202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509889688 (or 509889682 counting only the distinct ones).

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

Adding to 2120121202122 its reverse (2212021210212), we get a palindrome (4332142412334).

The spelling of 2120121202122 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-two".