2101212222 has 32 divisors (see below), whose sum is σ = 4282371744. Its totient is φ = 687139200.

The previous prime is 2101212143. The next prime is 2101212229. The reversal of 2101212222 is 2222121012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101212229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138072 + ... + 152532.

It is an arithmetic number, because the mean of its divisors is an integer number (133824117).

Almost surely, 2^2101212222 is an apocalyptic number.

2101212222 is an abundant number, since it is smaller than the sum of its proper divisors (2181159522).

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

2101212222 is a wasteful number, since it uses less digits than its factorization.

2101212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14924.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2101212222 is about 45838.9814677421. The cubic root of 2101212222 is about 1280.8255217551.

Adding to 2101212222 its reverse (2222121012), we get a palindrome (4323333234).

The spelling of 2101212222 in words is "two billion, one hundred one million, two hundred twelve thousand, two hundred twenty-two".