20101210222 has 4 divisors (see below), whose sum is σ = 30151815336. Its totient is φ = 10050605110.

The previous prime is 20101210169. The next prime is 20101210223. The reversal of 20101210222 is 22201210102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22201210102 = 2 ⋅11100605051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101210223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025302554 + ... + 5025302557.

It is an arithmetic number, because the mean of its divisors is an integer number (7537953834).

Almost surely, 2^20101210222 is an apocalyptic number.

20101210222 is a deficient number, since it is larger than the sum of its proper divisors (10050605114).

20101210222 is a wasteful number, since it uses less digits than its factorization.

20101210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050605113.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20101210222 its reverse (22201210102), we get a palindrome (42302420324).

The spelling of 20101210222 in words is "twenty billion, one hundred one million, two hundred ten thousand, two hundred twenty-two".