1212021120000 has 880 divisors, whose sum is σ = 4342753274112. Its totient is φ = 299335680000.

The previous prime is 1212021119989. The next prime is 1212021120031. The reversal of 1212021120000 is 211202121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2317439739 + ... + 2317440261.

Almost surely, 2^{1212021120000} is an apocalyptic number.

1212021120000 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 1212021120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2171376637056).

1212021120000 is an abundant number, since it is smaller than the sum of its proper divisors (3130732154112).

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

1212021120000 is an equidigital number, since it uses as much as digits as its factorization.

1212021120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 621 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1212021120000 its reverse (211202121), we get a palindrome (1212232322121).

The spelling of 1212021120000 in words is "one trillion, two hundred twelve billion, twenty-one million, one hundred twenty thousand".