1101211121012 has 24 divisors (see below), whose sum is σ = 1928120569032. Its totient is φ = 550319616000.

The previous prime is 1101211121011. The next prime is 1101211121057. The reversal of 1101211121012 is 2101211121011.

It can be written as a sum of positive squares in 4 ways, for example, as 731493615076 + 369717505936 = 855274^2 + 608044^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211121011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111217262 + ... + 111227162.

It is an arithmetic number, because the mean of its divisors is an integer number (80338357043).

Almost surely, 2^{1101211121012} is an apocalyptic number.

It is an amenable number.

1101211121012 is a deficient number, since it is larger than the sum of its proper divisors (826909448020).

1101211121012 is a wasteful number, since it uses less digits than its factorization.

1101211121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21539 (or 21537 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1101211121012 its reverse (2101211121011), we get a palindrome (3202422242023).

Subtracting 1101211121012 from its reverse (2101211121011), we obtain a palindrome (999999999999).

The spelling of 1101211121012 in words is "one trillion, one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, twelve".