1210121011200 has 360 divisors, whose sum is σ = 4025987445312. Its totient is φ = 320712212480.

The previous prime is 1210121011193. The next prime is 1210121011213. The reversal of 1210121011200 is 21101210121.

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 23 ways as a sum of consecutive naturals, for example, 205206652 + ... + 205212548.

Almost surely, 2^{1210121011200} is an apocalyptic number.

1210121011200 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 1210121011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2012993722656).

1210121011200 is an abundant number, since it is smaller than the sum of its proper divisors (2815866434112).

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

1210121011200 is an equidigital number, since it uses as much as digits as its factorization.

1210121011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105 (or 6074 counting only the distinct ones).

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

Adding to 1210121011200 its reverse (21101210121), we get a palindrome (1231222221321).

The spelling of 1210121011200 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred".