1211020211122 has 8 divisors (see below), whose sum is σ = 1816539778476. Its totient is φ = 605506951632.

The previous prime is 1211020211113. The next prime is 1211020211123. The reversal of 1211020211122 is 2211120201121.

It can be written as a sum of positive squares in 2 ways, for example, as 987044237001 + 223975974121 = 993501^2 + 473261^2 .

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 = 1211020211096 and 1211020211105.

It is not an unprimeable number, because it can be changed into a prime (1211020211123) 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, 1063573 + ... + 1885000.

Almost surely, 2^{1211020211122} is an apocalyptic number.

1211020211122 is a deficient number, since it is larger than the sum of its proper divisors (605519567354).

1211020211122 is a wasteful number, since it uses less digits than its factorization.

1211020211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153932.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211020211122 its reverse (2211120201121), we get a palindrome (3422140412243).

The spelling of 1211020211122 in words is "one trillion, two hundred eleven billion, twenty million, two hundred eleven thousand, one hundred twenty-two".