1211121022 has 8 divisors (see below), whose sum is σ = 1830986496. Its totient is φ = 600792192.

The previous prime is 1211121013. The next prime is 1211121029. The reversal of 1211121022 is 2201211121.

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 = 1211120993 and 1211121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211121029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2383843 + ... + 2384350.

It is an arithmetic number, because the mean of its divisors is an integer number (228873312).

Almost surely, 2^1211121022 is an apocalyptic number.

1211121022 is a deficient number, since it is larger than the sum of its proper divisors (619865474).

1211121022 is a wasteful number, since it uses less digits than its factorization.

1211121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4768322.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1211121022 is about 34801.1640897255. The cubic root of 1211121022 is about 1065.9312160596.

Adding to 1211121022 its reverse (2201211121), we get a palindrome (3412332143).

Subtracting 1211121022 from its reverse (2201211121), we obtain a palindrome (990090099).

It can be divided in two parts, 12111 and 21022, that added together give a palindrome (33133).

The spelling of 1211121022 in words is "one billion, two hundred eleven million, one hundred twenty-one thousand, twenty-two".