1100121201212 has 48 divisors (see below), whose sum is σ = 2227149872640. Its totient is φ = 469925702400.

The previous prime is 1100121201187. The next prime is 1100121201227. The reversal of 1100121201212 is 2121021210011.

It is a super-2 number, since 2×1100121201212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622964 + ... + 1608827.

It is an arithmetic number, because the mean of its divisors is an integer number (46398955680).

Almost surely, 2^{1100121201212} is an apocalyptic number.

It is an amenable number.

1100121201212 is an abundant number, since it is smaller than the sum of its proper divisors (1127028671428).

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

1100121201212 is a wasteful number, since it uses less digits than its factorization.

1100121201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232482 (or 2232480 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1100121201212 its reverse (2121021210011), we get a palindrome (3221142411223).

The spelling of 1100121201212 in words is "one trillion, one hundred billion, one hundred twenty-one million, two hundred one thousand, two hundred twelve".