121210210001200 has 30 divisors (see below), whose sum is σ = 291207529528844. Its totient is φ = 48484084000320.

The previous prime is 121210210001183. The next prime is 121210210001203. The reversal of 121210210001200 is 2100012012121.

It is not an unprimeable number, because it can be changed into a prime (121210210001203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 151512762102 + ... + 151512762901.

Almost surely, 2^{121210210001200} is an apocalyptic number.

121210210001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210210001200 is an abundant number, since it is smaller than the sum of its proper divisors (169997319527644).

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

121210210001200 is a wasteful number, since it uses less digits than its factorization.

121210210001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303025525021 (or 303025525010 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121210210001200 its reverse (2100012012121), we get a palindrome (123310222013321).

The spelling of 121210210001200 in words is "one hundred twenty-one trillion, two hundred ten billion, two hundred ten million, one thousand, two hundred".