2220210212121 has 96 divisors (see below), whose sum is σ = 3927331699200. Its totient is φ = 1191141987840.

The previous prime is 2220210212113. The next prime is 2220210212131. The reversal of 2220210212121 is 1212120120222.

It is a happy number.

2220210212121 is a `hidden beast` number, since 2 + 220 + 210 + 21 + 212 + 1 = 666.

2220210212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2220210212121 - 2³ = 2220210212113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2220210212094 and 2220210212103.

It is not an unprimeable number, because it can be changed into a prime (2220210212131) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4195050 + ... + 4694556.

It is an arithmetic number, because the mean of its divisors is an integer number (40909705200).

Almost surely, 2^{2220210212121} is an apocalyptic number.

It is an amenable number.

2220210212121 is a deficient number, since it is larger than the sum of its proper divisors (1707121487079).

2220210212121 is a wasteful number, since it uses less digits than its factorization.

2220210212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499699 (or 499696 counting only the distinct ones).

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

Adding to 2220210212121 its reverse (1212120120222), we get a palindrome (3432330332343).

The spelling of 2220210212121 in words is "two trillion, two hundred twenty billion, two hundred ten million, two hundred twelve thousand, one hundred twenty-one".