21312101200030 has 8 divisors (see below), whose sum is σ = 38361782160072. Its totient is φ = 8524840480008.

The previous prime is 21312101200003. The next prime is 21312101200037. The reversal of 21312101200030 is 3000210121312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21312101199977 and 21312101200013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21312101200037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065605059992 + ... + 1065605060011.

It is an arithmetic number, because the mean of its divisors is an integer number (4795222770009).

Almost surely, 2^{21312101200030} is an apocalyptic number.

21312101200030 is a deficient number, since it is larger than the sum of its proper divisors (17049680960042).

21312101200030 is a wasteful number, since it uses less digits than its factorization.

21312101200030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131210120010.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21312101200030 its reverse (3000210121312), we get a palindrome (24312311321342).

The spelling of 21312101200030 in words is "twenty-one trillion, three hundred twelve billion, one hundred one million, two hundred thousand, thirty".