21012010321230 has 40 divisors (see below), whose sum is σ = 56498961088152. Its totient is φ = 5603202752112.

The previous prime is 21012010321199. The next prime is 21012010321319. The reversal of 21012010321230 is 3212301021012.

21012010321230 is a `hidden beast` number, since 2 + 101 + 2 + 0 + 10 + 321 + 230 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12970375932 + ... + 12970377551.

Almost surely, 2^{21012010321230} is an apocalyptic number.

21012010321230 is an abundant number, since it is smaller than the sum of its proper divisors (35486950766922).

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

21012010321230 is a wasteful number, since it uses less digits than its factorization.

21012010321230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25940753502 (or 25940753493 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21012010321230 its reverse (3212301021012), we get a palindrome (24224311342242).

The spelling of 21012010321230 in words is "twenty-one trillion, twelve billion, ten million, three hundred twenty-one thousand, two hundred thirty".