1211021233422 has 128 divisors (see below), whose sum is σ = 3339864880128. Its totient is φ = 282507264000.

The previous prime is 1211021233421. The next prime is 1211021233427. The reversal of 1211021233422 is 2243321201121.

It is a junction number, because it is equal to n+sod(n) for n = 1211021233392 and 1211021233401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211021233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2502579 + ... + 2947022.

It is an arithmetic number, because the mean of its divisors is an integer number (26092694376).

Almost surely, 2^{1211021233422} is an apocalyptic number.

1211021233422 is an abundant number, since it is smaller than the sum of its proper divisors (2128843646706).

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

1211021233422 is a wasteful number, since it uses less digits than its factorization.

1211021233422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449674.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1211021233422 its reverse (2243321201121), we get a palindrome (3454342434543).

The spelling of 1211021233422 in words is "one trillion, two hundred eleven billion, twenty-one million, two hundred thirty-three thousand, four hundred twenty-two".