2100200021222 has 4 divisors (see below), whose sum is σ = 3150300031836. Its totient is φ = 1050100010610.

The previous prime is 2100200021221. The next prime is 2100200021251. The reversal of 2100200021222 is 2221200020012.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2100200021197 and 2100200021206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100200021221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525050005304 + ... + 525050005307.

It is an arithmetic number, because the mean of its divisors is an integer number (787575007959).

Almost surely, 2^{2100200021222} is an apocalyptic number.

2100200021222 is a deficient number, since it is larger than the sum of its proper divisors (1050100010614).

2100200021222 is a wasteful number, since it uses less digits than its factorization.

2100200021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050100010613.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2100200021222 its reverse (2221200020012), we get a palindrome (4321400041234).

The spelling of 2100200021222 in words is "two trillion, one hundred billion, two hundred million, twenty-one thousand, two hundred twenty-two".