1101211001200 has 60 divisors (see below), whose sum is σ = 2670385323240. Its totient is φ = 436367706880.

The previous prime is 1101211001173. The next prime is 1101211001201. The reversal of 1101211001200 is 21001121011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101211001201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12821815 + ... + 12907414.

It is an arithmetic number, because the mean of its divisors is an integer number (44506422054).

Almost surely, 2^{1101211001200} is an apocalyptic number.

1101211001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101211001200 is an abundant number, since it is smaller than the sum of its proper divisors (1569174322040).

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

1101211001200 is a wasteful number, since it uses less digits than its factorization.

1101211001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25729354 (or 25729343 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1101211001200 its reverse (21001121011), we get a palindrome (1122212122211).

The spelling of 1101211001200 in words is "one trillion, one hundred one billion, two hundred eleven million, one thousand, two hundred".