20110221122222 has 32 divisors (see below), whose sum is σ = 38225261712384. Its totient is φ = 7706705983200.

The previous prime is 20110221122213. The next prime is 20110221122261. The reversal of 20110221122222 is 22222112201102.

It is a junction number, because it is equal to n+sod(n) for n = 20110221122194 and 20110221122203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1070366438 + ... + 1070385225.

It is an arithmetic number, because the mean of its divisors is an integer number (1194539428512).

Almost surely, 2^{20110221122222} is an apocalyptic number.

20110221122222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20110221122222 is a deficient number, since it is larger than the sum of its proper divisors (18115040590162).

20110221122222 is a wasteful number, since it uses less digits than its factorization.

20110221122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2140751744.

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

Adding to 20110221122222 its reverse (22222112201102), we get a palindrome (42332333323324).

The spelling of 20110221122222 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-two".