1210121122100 has 72 divisors (see below), whose sum is σ = 2870570313408. Its totient is φ = 439140268800.

The previous prime is 1210121122097. The next prime is 1210121122109. The reversal of 1210121122100 is 12211210121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210121122109) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 593777 + ... + 1665176.

Almost surely, 2^{1210121122100} is an apocalyptic number.

1210121122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210121122100 is an abundant number, since it is smaller than the sum of its proper divisors (1660449191308).

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

1210121122100 is a wasteful number, since it uses less digits than its factorization.

1210121122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259465 (or 2259458 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1210121122100 its reverse (12211210121), we get a palindrome (1222332332221).

The spelling of 1210121122100 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred".