2102220022221 has 64 divisors (see below), whose sum is σ = 3404088960000. Its totient is φ = 1271614645440.

The previous prime is 2102220022207. The next prime is 2102220022229. The reversal of 2102220022221 is 1222200222012.

It is not a de Polignac number, because 2102220022221 - 2¹³ = 2102220014029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102220022194 and 2102220022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102220022229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 512859630 + ... + 512863728.

It is an arithmetic number, because the mean of its divisors is an integer number (53188890000).

Almost surely, 2^{2102220022221} is an apocalyptic number.

It is an amenable number.

2102220022221 is a deficient number, since it is larger than the sum of its proper divisors (1301868937779).

2102220022221 is a wasteful number, since it uses less digits than its factorization.

2102220022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031 (or 7025 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2102220022221 its reverse (1222200222012), we get a palindrome (3324420244233).

The spelling of 2102220022221 in words is "two trillion, one hundred two billion, two hundred twenty million, twenty-two thousand, two hundred twenty-one".