1211322021332 has 6 divisors (see below), whose sum is σ = 2119813537338. Its totient is φ = 605661010664.

The previous prime is 1211322021319. The next prime is 1211322021337. The reversal of 1211322021332 is 2331202231121.

It can be written as a sum of positive squares in only one way, i.e., 1207286722756 + 4035298576 = 1098766^2 + 63524^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211322021298 and 1211322021307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211322021337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151415252663 + ... + 151415252670.

It is an arithmetic number, because the mean of its divisors is an integer number (353302256223).

Almost surely, 2^{1211322021332} is an apocalyptic number.

It is an amenable number.

1211322021332 is a deficient number, since it is larger than the sum of its proper divisors (908491516006).

1211322021332 is a wasteful number, since it uses less digits than its factorization.

1211322021332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302830505337 (or 302830505335 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1211322021332 its reverse (2331202231121), we get a palindrome (3542524252453).

The spelling of 1211322021332 in words is "one trillion, two hundred eleven billion, three hundred twenty-two million, twenty-one thousand, three hundred thirty-two".