1101211220000 has 60 divisors (see below), whose sum is σ = 2709144832086. Its totient is φ = 440484480000.

The previous prime is 1101211219987. The next prime is 1101211220009. The reversal of 1101211220000 is 221121011.

It can be written as a sum of positive squares in 5 ways, for example, as 5596835344 + 1095614384656 = 74812^2 + 1046716^2 .

It is not an unprimeable number, because it can be changed into a prime (1101211220009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27510281 + ... + 27550280.

Almost surely, 2^{1101211220000} is an apocalyptic number.

1101211220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101211220000 is an abundant number, since it is smaller than the sum of its proper divisors (1607933612086).

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

1101211220000 is an frugal number, since it uses more digits than its factorization.

1101211220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55060591 (or 55060568 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1101211220000 its reverse (221121011), we get a palindrome (1101432341011).

The spelling of 1101211220000 in words is "one trillion, one hundred one billion, two hundred eleven million, two hundred twenty thousand".