20101211212222 has 8 divisors (see below), whose sum is σ = 34459219220976. Its totient is φ = 8614804805232.

The previous prime is 20101211212189. The next prime is 20101211212237. The reversal of 20101211212222 is 22221211210102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20101211212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 717900400423 + ... + 717900400450.

It is an arithmetic number, because the mean of its divisors is an integer number (4307402402622).

Almost surely, 2^{20101211212222} is an apocalyptic number.

20101211212222 is a deficient number, since it is larger than the sum of its proper divisors (14358008008754).

20101211212222 is a wasteful number, since it uses less digits than its factorization.

20101211212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435800800882.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20101211212222 its reverse (22221211210102), we get a palindrome (42322422422324).

The spelling of 20101211212222 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty-two".