2202012122121 has 80 divisors (see below), whose sum is σ = 3795099834240. Its totient is φ = 1246379581440.

The previous prime is 2202012122087. The next prime is 2202012122159. The reversal of 2202012122121 is 1212212102022.

It is a happy number.

2202012122121 is a `hidden beast` number, since 220 + 20 + 1 + 212 + 212 + 1 = 666.

It is not a de Polignac number, because 2202012122121 - 2³⁰ = 2200938380297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202012122094 and 2202012122103.

It is not an unprimeable number, because it can be changed into a prime (2202012122021) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 26041491 + ... + 26125911.

It is an arithmetic number, because the mean of its divisors is an integer number (47438747928).

Almost surely, 2^{2202012122121} is an apocalyptic number.

2202012122121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2202012122121 is a deficient number, since it is larger than the sum of its proper divisors (1593087712119).

2202012122121 is a wasteful number, since it uses less digits than its factorization.

2202012122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84876 (or 84867 counting only the distinct ones).

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

Adding to 2202012122121 its reverse (1212212102022), we get a palindrome (3414224224143).

The spelling of 2202012122121 in words is "two trillion, two hundred two billion, twelve million, one hundred twenty-two thousand, one hundred twenty-one".