2101220220222 has 48 divisors (see below), whose sum is σ = 4606560438480. Its totient is φ = 692133797376.

The previous prime is 2101220220193. The next prime is 2101220220283. The reversal of 2101220220222 is 2220220221012.

2101220220222 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 220 + 220 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2101220220195 and 2101220220204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237528 + ... + 2063700.

It is an arithmetic number, because the mean of its divisors is an integer number (95970009135).

Almost surely, 2^{2101220220222} is an apocalyptic number.

2101220220222 is an abundant number, since it is smaller than the sum of its proper divisors (2505340218258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101220220222 is a wasteful number, since it uses less digits than its factorization.

2101220220222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826937 (or 1826934 counting only the distinct ones).

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

Adding to 2101220220222 its reverse (2220220221012), we get a palindrome (4321440441234).

The spelling of 2101220220222 in words is "two trillion, one hundred one billion, two hundred twenty million, two hundred twenty thousand, two hundred twenty-two".