100212222111222 has 64 divisors (see below), whose sum is σ = 227205862974720. Its totient is φ = 29211137391744.

The previous prime is 100212222111181. The next prime is 100212222111227. The reversal of 100212222111222 is 222111222212001.

It is a super-3 number, since 3×100212222111222³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212222111227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86511408 + ... + 87662124.

It is an arithmetic number, because the mean of its divisors is an integer number (3550091608980).

Almost surely, 2^{100212222111222} is an apocalyptic number.

100212222111222 is an abundant number, since it is smaller than the sum of its proper divisors (126993640863498).

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

100212222111222 is a wasteful number, since it uses less digits than its factorization.

100212222111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209517.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 100212222111222 its reverse (222111222212001), we get a palindrome (322323444323223).

The spelling of 100212222111222 in words is "one hundred trillion, two hundred twelve billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".