2220210202121 has 4 divisors (see below), whose sum is σ = 2220316560000. Its totient is φ = 2220103844244.

The previous prime is 2220210202087. The next prime is 2220210202141. The reversal of 2220210202121 is 1212020120222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2220210202121 - 2²⁶ = 2220143093257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2220210202121.

It is not an unprimeable number, because it can be changed into a prime (2220210202141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53147621 + ... + 53189378.

It is an arithmetic number, because the mean of its divisors is an integer number (555079140000).

Almost surely, 2^{2220210202121} is an apocalyptic number.

It is an amenable number.

2220210202121 is a deficient number, since it is larger than the sum of its proper divisors (106357879).

2220210202121 is a wasteful number, since it uses less digits than its factorization.

2220210202121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106357878.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2220210202121 its reverse (1212020120222), we get a palindrome (3432230322343).

The spelling of 2220210202121 in words is "two trillion, two hundred twenty billion, two hundred ten million, two hundred two thousand, one hundred twenty-one".