1212100102000 has 240 divisors, whose sum is σ = 3136333288608. Its totient is φ = 452959641600.

The previous prime is 1212100101997. The next prime is 1212100102019. The reversal of 1212100102000 is 2010012121.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79178347 + ... + 79193653.

Almost surely, 2^{1212100102000} is an apocalyptic number.

1212100102000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212100102000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568166644304).

1212100102000 is an abundant number, since it is smaller than the sum of its proper divisors (1924233186608).

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

1212100102000 is a wasteful number, since it uses less digits than its factorization.

1212100102000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501 (or 15468 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1212100102000 its reverse (2010012121), we get a palindrome (1214110114121).

The spelling of 1212100102000 in words is "one trillion, two hundred twelve billion, one hundred million, one hundred two thousand".