211021121121222 has 16 divisors (see below), whose sum is σ = 422066890128960. Its totient is φ = 70336265725992.

The previous prime is 211021121121157. The next prime is 211021121121227. The reversal of 211021121121222 is 222121121120112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021121121227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026883972 + ... + 1027089447.

It is an arithmetic number, because the mean of its divisors is an integer number (26379180633060).

Almost surely, 2^{211021121121222} is an apocalyptic number.

211021121121222 is an abundant number, since it is smaller than the sum of its proper divisors (211045769007738).

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

211021121121222 is a wasteful number, since it uses less digits than its factorization.

211021121121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053990547.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 211021121121222 its reverse (222121121120112), we get a palindrome (433142242241334).

The spelling of 211021121121222 in words is "two hundred eleven trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".