1211020100110 has 16 divisors (see below), whose sum is σ = 2180177054496. Its totient is φ = 484332290208.

The previous prime is 1211020100107. The next prime is 1211020100153. The reversal of 1211020100110 is 110010201121.

It is a super-3 number, since 3×1211020100110³ (a number of 37 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9401562 + ... + 9529501.

It is an arithmetic number, because the mean of its divisors is an integer number (136261065906).

Almost surely, 2^{1211020100110} is an apocalyptic number.

1211020100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211020100110 is a deficient number, since it is larger than the sum of its proper divisors (969156954386).

1211020100110 is a wasteful number, since it uses less digits than its factorization.

1211020100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18937467.

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

Adding to 1211020100110 its reverse (110010201121), we get a palindrome (1321030301231).

The spelling of 1211020100110 in words is "one trillion, two hundred eleven billion, twenty million, one hundred thousand, one hundred ten".