1210100121012 has 48 divisors (see below), whose sum is σ = 2943161426240. Its totient is φ = 386607209472.

The previous prime is 1210100121001. The next prime is 1210100121019. The reversal of 1210100121012 is 2101210010121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210100121019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20309437 + ... + 20368932.

Almost surely, 2^{1210100121012} is an apocalyptic number.

1210100121012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1210100121012 is an abundant number, since it is smaller than the sum of its proper divisors (1733061305228).

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

1210100121012 is a wasteful number, since it uses less digits than its factorization.

1210100121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40678480 (or 40678478 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1210100121012 its reverse (2101210010121), we get a palindrome (3311310131133).

The spelling of 1210100121012 in words is "one trillion, two hundred ten billion, one hundred million, one hundred twenty-one thousand, twelve".