1101221123212 has 12 divisors (see below), whose sum is σ = 2202442246480. Its totient is φ = 471951909936.

The previous prime is 1101221123203. The next prime is 1101221123243. The reversal of 1101221123212 is 2123211221011.

1101221123212 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101221123212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19664662887 + ... + 19664662942.

Almost surely, 2^{1101221123212} is an apocalyptic number.

It is an amenable number.

1101221123212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1101221123212 is a wasteful number, since it uses less digits than its factorization.

1101221123212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39329325840 (or 39329325838 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1101221123212 its reverse (2123211221011), we get a palindrome (3224432344223).

The spelling of 1101221123212 in words is "one trillion, one hundred one billion, two hundred twenty-one million, one hundred twenty-three thousand, two hundred twelve".