2202121112121 has 24 divisors (see below), whose sum is σ = 3635625302400. Its totient is φ = 1258224160896.

The previous prime is 2202121112089. The next prime is 2202121112123. The reversal of 2202121112121 is 1212111212022.

2202121112121 is a `hidden beast` number, since 220 + 21 + 211 + 1 + 212 + 1 = 666.

It is not a de Polignac number, because 2202121112121 - 2⁵ = 2202121112089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2202121112094 and 2202121112103.

It is not an unprimeable number, because it can be changed into a prime (2202121112123) 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, 1203405 + ... + 2419178.

It is an arithmetic number, because the mean of its divisors is an integer number (151484387600).

Almost surely, 2^{2202121112121} is an apocalyptic number.

2202121112121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2202121112121 is a deficient number, since it is larger than the sum of its proper divisors (1433504190279).

2202121112121 is a wasteful number, since it uses less digits than its factorization.

2202121112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632245 (or 3632242 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2202121112121 its reverse (1212111212022), we get a palindrome (3414232324143).

Subtracting from 2202121112121 its reverse (1212111212022), we obtain a palindrome (990009900099).

The spelling of 2202121112121 in words is "two trillion, two hundred two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-one".