212111221221022 has 16 divisors (see below), whose sum is σ = 319223490570432. Its totient is φ = 105703476278400.

The previous prime is 212111221221019. The next prime is 212111221221047. The reversal of 212111221221022 is 220122122111212.

It is a junction number, because it is equal to n+sod(n) for n = 212111221220984 and 212111221221002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16330423 + ... + 26285074.

It is an arithmetic number, because the mean of its divisors is an integer number (19951468160652).

Almost surely, 2^{212111221221022} is an apocalyptic number.

212111221221022 is a deficient number, since it is larger than the sum of its proper divisors (107112269349410).

212111221221022 is a wasteful number, since it uses less digits than its factorization.

212111221221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42623763.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 212111221221022 its reverse (220122122111212), we get a palindrome (432233343332234).

The spelling of 212111221221022 in words is "two hundred twelve trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, twenty-two".