20101221221222 has 8 divisors (see below), whose sum is σ = 30151851210000. Its totient is φ = 10050604151224.

The previous prime is 20101221221167. The next prime is 20101221221231. The reversal of 20101221221222 is 22212212210102.

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

It is a junction number, because it is equal to n+sod(n) for n = 20101221221194 and 20101221221203.

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, 3302804 + ... + 7149192.

It is an arithmetic number, because the mean of its divisors is an integer number (3768981401250).

Almost surely, 2^{20101221221222} is an apocalyptic number.

20101221221222 is a deficient number, since it is larger than the sum of its proper divisors (10050629988778).

20101221221222 is a wasteful number, since it uses less digits than its factorization.

20101221221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6459390.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20101221221222 its reverse (22212212210102), we get a palindrome (42313433431324).

The spelling of 20101221221222 in words is "twenty trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".