30212121001200 has 60 divisors (see below), whose sum is σ = 96779494277688. Its totient is φ = 8056565600000.

The previous prime is 30212121001159. The next prime is 30212121001201. The reversal of 30212121001200 is 210012121203.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30212121001200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30212121001201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12588382551 + ... + 12588384950.

Almost surely, 2^{30212121001200} is an apocalyptic number.

30212121001200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30212121001200 is an abundant number, since it is smaller than the sum of its proper divisors (66567373276488).

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

30212121001200 is a wasteful number, since it uses less digits than its factorization.

30212121001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25176767522 (or 25176767511 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 30212121001200 its reverse (210012121203), we get a palindrome (30422133122403).

The spelling of 30212121001200 in words is "thirty trillion, two hundred twelve billion, one hundred twenty-one million, one thousand, two hundred".